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Home My WebLink AboutMO-6121_23163_CA_MRP_20220816_CAPR August 16, 2022 Mr. Ryan A. Bond, P.G. North Carolina Department of Environmental Quality Mooresville Regional Office 610 East Center Avenue Mooresville, North Carolina 28115 RE: Seventh Corrective Action Performance Report –August 2021 to July 2022 Former Coastal Mart No. 443 Facility ID No. 0-010492 1237 West Front Street Statesville, Iredell County, North Carolina NCDEQ Incident No. 23163 NCDEQ Risk Ranking: Intermediate URS Project Number: 60675620 Dear Mr. Bond: On behalf of El Paso Remediation Company (EPRC), URS Corporation – North Carolina (URS) is pleased to submit one copy of the Seventh Corrective Action Performance Report –August 2021 to July 2022 for the Former Coastal Mart No. 443 (the Site) located in Statesville, North Carolina. This report presents results from the groundwater monitoring events conducted in January, March, and July 2022. If you have any questions regarding this submittal, please contact me at (678) 808-8930. Sincerely, URS Corporation – North Carolina Vernon “Chip” A. Cavin, III Project Manager cc: Joseph Wiley, P.G., El Paso Remediation Company URS Project File R E P O R T SEVENTH CORRECTIVE ACTION PERFORMANCE REPORT – AUGUST 2021 TO JULY 2022 FORMER COASTAL MART NO. 443 FACILITY ID NO. 0-010492 1237 WEST FRONT STREET STATESVILLE, IREDELL COUNTY, NORTH CAROLINA NCDEQ INCIDENT NO.: 23163 NCDEQ RISK CLASS: INTERMEDIATE Prepared for El Paso Remediation Company 1001 Louisiana Street Houston, Texas 77002 August 16, 2022 URS Corporation – North Carolina 6000 Fairview Road, Suite 200 Charlotte, North Carolina 28210 (704) 522-0330 i SEVENTH CORRECTIVE ACTION PERFORMANCE REPORT AUGUST 2021 TO JULY 2022 FORMER COASTAL MART NO. 443 1237 WEST FRONT STREET STATESVILLE, IREDELL COUNTY, NORTH CAROLINA NCDEQ INCIDENT NO. 23163 Report Date: August 16, 2022 Responsible Party (RP): El Paso Remediation Company 1001 Louisiana Street Houston, Texas 77002 (713) 420-3475 Attn: Joseph Wiley, P.G. Operator: Jimmy Discount Store, Inc. 1237 West Front Street Statesville, NC, 28677 RP Consultant: URS Corporation – North Carolina 6000 Fairview Road, Suite 200 Charlotte, North Carolina 28210 (704) 522-0330 Attn: Chip Cavin Site Risk Classification: Intermediate Land Use Classification: Residential (proposed Industrial/Commercial) Release Information: Suspected release from gasoline UST system (quantity unknown) Release Location: N35o 46.9’ Latitude, W80o 54.5’ Longitude Table of Contents ii 1.0 EXECUTIVE SUMMARY ............................................................................................................... 1-1 1.1 Introduction .......................................................................................................... 1-1 1.2 Limiting Conditions ............................................................................................. 1-3 1.3 Registered Professional Statement ....................................................................... 1-4 2.0 BACKGROUND ............................................................................................................................ 2-1 2.1 Facility Location and Description ........................................................................ 2-1 2.2 Regulatory History ............................................................................................... 2-1 2.3 Previous Investigations ........................................................................................ 2-1 2.4 Facility Geologic/Hydrogeologic Setting ............................................................ 2-4 3.0 GROUNDWATER MONITORING ................................................................................................. 3-1 3.1 Semi-Annual Groundwater Monitoring Event - January 2022 ............................ 3-1 3.2 Resampling of MW-6 and MW-14 – March 2022 ............................................... 3-1 3.3 Semi-Annual Groundwater Monitoring Event - July 2022 .................................. 3-2 4.0 SYSTEM OPERATIONS ............................................................................................................... 4-1 5.0 RESULTS AND DISCUSSION ...................................................................................................... 5-1 5.1 Groundwater Gauging Results – January 2022 and July 2022 ............................ 5-1 5.2 LNAPL Results .................................................................................................... 5-1 5.3 Groundwater Analytical Results .......................................................................... 5-1 5.3.1 Groundwater Analytical Results – January 2022..................................... 5-1 5.3.2 Groundwater Analytical Results – March 2022....................................... 5-2 5.3.3 Groundwater Analytical Results – July 2022 .......................................... 5-2 5.4 System Progress and Effectiveness ...................................................................... 5-2 6.0 CONCLUSIONS ............................................................................................................................ 6-1 7.0 RECOMMENDATIONS ................................................................................................................. 7-1 8.0 REFERENCES .............................................................................................................................. 8-1 TABLES Table 1 Well Construction Details Table 2 Groundwater Elevation Data Table 3 Groundwater Quality Field Parameters – January 19, 2022, March 21, 2022, and July 20, 2022 Table 4 Groundwater Analytical Results Table 5 Remedial System Maintenance Summary Table of Contents iii Table 6 Air Sparge Performance Summary Table 7 Soil Vapor Extraction Performance Summary Table 8 Air Sparge Well Data Table 9 Soil Vapor Extraction Well Data Table 10 Vapor Treatment System Analytical Summary FIGURES Figure 1 Location Map Figure 2 Site Plan Figure 3a Potentiometric Surface Map, January 19, 2022 Figure 3b Potentiometric Surface Map, July 20, 2022 Figure 4a Benzene Concentration Map, May 15-16, 2017 Figure 4b Benzene Concentration Map, January 19, 2022 Figure 4c Benzene Concentration Map, March 21, 2022 Figure 4d Benzene Concentration Map, July 20, 2022 APPENDICES Appendix A Laboratory Analytical Reports Appendix B Cumulative Hydrocarbon Mass Removal Appendix C Time Trend Graphs SECTIONONE Executive Summary 1-1 1.0 EXECUTIVE SUMMARY 1.1 INTRODUCTION This report has been prepared for submittal to the North Carolina Department of Environmental Quality (NCDEQ) by URS Corporation – North Carolina (URS) on behalf of El Paso Remediation Company (EPRC) for the activities performed at the Former Coastal Mart No. 443 (the Site). The report provides details regarding the groundwater monitoring event conducted in January 2022, the limited groundwater sampling event in March 2022, and the groundwater monitoring event conducted in July 2022. The field activities conducted in January 2022 and July 2022 were conducted as proposed in the Pre-Approval Task Authorizations for the Site dated January 4, 2022 and approved by NCDEQ on January 5, 2022. The Site is located at 1237 West Front Street, Statesville, Iredell County, North Carolina. The Site is presently operated by Jimmy Discount Store, Inc. and is branded and operated as a Supertest service station and convenience store. Currently, two 6,000-gallon capacity gasoline underground storage tanks (USTs) and one 8,000-gallon capacity gasoline UST are in use at the Site. The surrounding area property use is mixed commercial, industrial, and residential. The source(s), location(s), and amount(s) of release are unknown, but are assumed to be related to the current USTs and/or the associated ancillary piping and dispensers. No water supply wells, public water supplies, wellhead protection areas, or surface waters are located within a 1,500-foot-radius of the source area. The area is serviced by public water and sewer. The aquifer matrix below the Site consists primarily of silt and clay to a depth of at least 75 feet below ground surface (ft bgs). From October 3 through 24, 2016, URS oversaw the installation of 20 AS wells (AS-2R through AS-21) and 13 SVE wells (SVE-2 through SVE-14) by Geologic Exploration, Inc. (GEX). In addition, compromised AS well AS-2 (replaced by AS-2R) was properly abandoned. On February 28, 2017, URS oversaw the installation of one Type II shallow monitoring well (MW- 20) and one deep Type III monitoring well (MW-21D) by GEX at downgradient and off-site locations. From April 2017 through June 2017, URS oversaw SAEDACCO, Inc. (SAEDACCO) perform AS/SVE system construction activities including pavement cutting, trenching, underground pipe installation, well vault installation, concrete paving, system compound installation and setup, pressure testing, and site restoration in preparation for AS/SVE system startup in June 2017. On May 15 and 16, 2017, URS conducted a baseline groundwater monitoring event at the Site prior to activation of the AS/SVE remediation system. No light non-aqueous phase liquid (LNAPL) was detected in any of the monitoring wells associated with the Site. Dissolved benzene concentrations were detected above the North Carolina Gross Contamination Level (NC GCL) standard of 5,000 micrograms per liter (µg/L) in groundwater samples from six (6) wells, SECTIONONE Executive Summary 1-2 ranging from 5,340 µg/L to 22,400 µg/L in concentration. Additionally, dissolved 1,2- Dibromoethane (EDB) was detected at a concentration in excess of the NC GCL standard of 50 µg/L in the groundwater samples collected from three (3) monitoring wells, ranging from 68.0 µg/L to 95.2 µg/L. The full-scale AS/SVE system was activated on June 19 and 20, 2017. Following activation of the AS/SVE remediation system, semi-annual groundwater sampling events are conducted at the Site to assess the effect of the remediation system on contaminant concentrations in groundwater. This report provides results of the seventh and eighth groundwater monitoring events since activation of the AS/SVE system. Compared to the May 2017 baseline groundwater monitoring event, reported contaminant of concern (COC) concentrations have decreased over time, attributable to the operation of the AS/SVE system. The first and second groundwater monitoring events (January 2018 and July/August 2018, respectively) following activation of the AS/SVE system showed benzene concentrations in excess of the NC GCL in five (5) wells and two (2) wells, respectively. In January 2019, benzene was detected above its NC GCL of 5,000 µg/L in two (2) monitoring wells (MW-1 and MW-6), at concentrations of 5,900 µg/L and 19,000 µg/L, respectively; in July 2019, there was benzene exceedance in only one (1) well (MW-6), at 7,100 µg/L. In January 2019, EDB was detected above its NC GCL of 50 µg/L in one (1) monitoring well (MW-6), at a concentration of 77 µg/L; in July 2019, no exceedances for EDB were reported. In January 2020, there was benzene exceedance in MW-6 at a concentration of 7,400 µg/L and 8,900 µg/L in the well’s duplicate sample. There were no EDB exceedances in the January 2020 analytical results. In July 2020, benzene was detected above its NC GCL of 5,000 µg/L in MW-6 at a concentration of 13,000 µg/L (11,000 µg/L in the duplicate); there were no EDB exceedances in the July 2020 analytical results. The July 2020 analytical results indicated an increase in the dissolved benzene concentrations at MW-6 from approximately 8,900 µg/L in January 2020 to 13,000 µg/L in July 2020. Operational adjustments to the AS/SVE system were implemented in February 2020, including the installation of new air flow meters and increases in flow rates in the vicinity of MW-6 for greater mass removal. To evaluate if the increased flow rates may be attributable to increased dissolution of residual hydrocarbon and to further assess the decreasing trend in dissolved benzene in that area, URS recommended that MW-6 be resampled in October 2020. On October 21, 2020, MW-6 was resampled, and the analytical results indicated a benzene concentration of 3,800 µg/L, which is a marked decrease in benzene concentration compared to July 2020 (13,000 µg/L). During the January 2021 monitoring event, dissolved benzene concentrations did not exceed the NC GCL of 5,000 µg/L in any of the groundwater samples collected during the monitoring event. Benzene was detected in the groundwater sample collected from MW-6 at a concentration SECTIONONE Executive Summary 1-3 of 2,900 ug/L which continued to support a decreasing trend in benzene concentrations at this well. On April 15, 2021, MW-6 was resampled to continue to evaluate COC concentrations at this well, and the analytical results indicated a decreased benzene concentration of 2,300 µg/L. During the July 13, 2021 groundwater monitoring event, dissolved benzene concentrations did not exceed the NC GCL of 5,000 µg/L in any of the groundwater samples collected during the monitoring event. Benzene was detected in the groundwater sample collected from MW-6 at a concentration of 860 µg/L. Based on these results, it was recommended that the AS/SVE system continue to remain deactivated for post-remediation monitoring. URS and EPRC recommended conducting two semi-annual post-remediation groundwater monitoring events in January 2022 and July 2022, respectively. Results of the post-remediation groundwater monitoring events would be presented in a Corrective Action Performance Report. In a letter dated September 23, 2021, NCDEQ agreed with these recommendations. During the January 2022 groundwater monitoring event, dissolved benzene was detected in the groundwater sample collected from MW-6 at a concentration of 6,300 µg/L, which exceeds the GCL of 5,000 µg/L. Subsequently, MW-6 was resampled on March 21, 2022, and dissolved benzene was again detected at a concentration of 6,300 µg/L. No other COCs were detected above their respective GCLs in the groundwater samples collected in January 2022 and March 2022. During the July 2022 groundwater monitoring event, dissolved benzene was detected in the groundwater sample collected from MW-6 at a concentration of 14,000 µg/L, which exceeds the GCL for benzene. Additionally, EDB was detected in the groundwater sample collected from MW-6 during the July 2022 monitoring event at an estimated concentration of 50 µg/L, which is equal to the GCL of 50 µg/L for EDB. EDB was detected at an estimated concentration of 52 µg/L in the duplicate sample collected from MW-6 during the July 2022 monitoring event. No other COCs were detected above their respective GCLs in the groundwater samples collected during the January, March, and July 2022 monitoring events. 1.2 LIMITING CONDITIONS Historical site information presented in this report was obtained primarily from review and interpretation of available historical data and reports. URS does not assume or accept any responsibility or liability for the quality, accuracy, or completeness of the data included in this report that was not generated by or on behalf of URS. SECTIONONE Executive Summary 1-4 1.3 REGISTERED PROFESSIONAL STATEMENT I, Jasen Zinna, P.E., a Professional Engineer for URS Corporation – North Carolina, do certify that the information contained in this report is correct and accurate to the best of my knowledge. Jasen Zinna, P.E. URS Corporation – North Carolina Date SECTIONTWO Background 2-1 2.0 BACKGROUND 2.1 FACILITY LOCATION AND DESCRIPTION The Site is located at 1237 West Front Street, in Statesville, Iredell County, North Carolina at the southeastern corner of the intersection of West Front Street and Bristol Road (Figure 1). The Site is currently operated by Jimmy Discount Store, Inc. and is branded and operated as a Supertest service station and convenience store. Currently, two 6,000-gallon gasoline USTs and one 8,000-gallon gasoline UST, with associated dispenser piping are in use at the Site. The surrounding property use is mixed commercial, industrial, and residential. 2.2 REGULATORY HISTORY The Site is the location of NCDEQ groundwater incident number 23163. The risk classification for this incident is Intermediate due to the presence of LNAPL during historical investigation events. LNAPL had been detected intermittently from 2002 to 2013 in Site monitoring wells. Additional information regarding the presence of LNAPL is provided in Section 5.2. The Site is currently classified as Residential by NCDEQ. Additional information regarding current property owners and occupants in a 1,500-foot radius of the Site was documented in the Comprehensive Site Assessment (CSA) submitted by Handex (Handex, 2004). URS believes that the land use classification for the Site can be changed to Industrial/Commercial. NCDEQ has verbally concurred with URS regarding the reclassification of the Site. However, the Site has not been formally reclassified. 2.3 PREVIOUS INVESTIGATIONS In November 2013, prior to the implementation of an AS/SVE pilot test, URS personnel supervised the installation of two AS wells, one SVE well, and two monitoring wells at the Site. A limited baseline groundwater monitoring event was conducted at the Site on November 23, 2013. Data collected during the limited baseline groundwater monitoring event was subsequently compared to data collected during a post-pilot test limited monitoring event conducted at the Site following completion of the AS/SVE pilot test (December 9, 2013) to evaluate the effectiveness of the AS/SVE pilot test. The AS/SVE pilot test was conducted on December 3 and 4, 2013, utilizing equipment operated by Equipment with Experience. The AS/SVE pilot test achieved hydrocarbon mass removal rates up to 39.6 pounds per day. A Corrective Action Plan (CAP) presenting the results of the AS/SVE pilot test activities and recommending AS/SVE technology as a viable remediation option for the Site was submitted to NCDEQ on January 30, 2014 (URS, 2014a). SECTIONTWO Background 2-2 On April 24, 2014, a comprehensive groundwater monitoring event was conducted by URS on behalf of EPRC. Based on the laboratory analytical results, dissolved benzene concentrations were detected in groundwater samples collected from multiple monitoring wells above the NC GCL standard of 5,000 µg/L. URS concluded that the extent of dissolved COCs above the NC GCLs to the southwest of the Site (downgradient of monitoring wells MW-16 and MW-17D) had not been evaluated (URS, 2014b). As part of the Corrective Action Plan (CAP) - January 2014 (URS, 2014a), URS proposed the installation of at least one shallow monitoring well and one deep monitoring well to evaluate down-gradient groundwater conditions prior to and during operation of the proposed AS/SVE system. In a correspondence dated June 2, 2014, NCDEQ approved the CAP recommending the implementation of full-scale AS/SVE remediation. On October 2, 2014, a Preapproval Task Authorization form was submitted to NCDEQ for the installation of two additional monitoring wells, thirty-two (32) AS and SVE wells, and the proposed AS/SVE system and associated piping and trenching. On August 8, 2015, NCDEQ provided URS with an email correspondence indicating that the Preapproval Task Authorization would not be approved. During a conference call on April 27, 2016, attended by representatives from NCDEQ, EPRC, and URS, it was agreed that URS would update and submit a revised Preapproval Task Authorization with updated contractor quotes. The revised Preapproval Task Authorization for installation and operation of an AS/SVE groundwater remediation system was submitted on July 27, 2016 and approved by NCDEQ on August 4, 2016. From October 3 through 24, 2016, URS oversaw the installation of twenty (20) AS wells (AS-2R through AS-21) and thirteen (13) SVE wells (SVE-2 through SVE-14) to be utilized as part of an AS/SVE remediation system at the Site. Additionally, compromised AS well AS-2 (replaced by AS-2R) was properly abandoned. Among the AS wells, seventeen (17) were vertical wells and three (3) wells were angled wells. On February 27 and 28, 2017, URS oversaw the installation of shallow groundwater monitoring well MW-20 and deep groundwater monitoring well MW-21D, to evaluate the extent of dissolved COCs above the NC GCLs to the southwest of the Site (downgradient of existing monitoring wells MW-16 and MW-17D). Details of the October 2016 AS and SVE well installation activities, and the February 2017 monitoring well installation activities, were provided in the Remediation System Installation and Baseline Groundwater Monitoring Report - November 2017 (URS, 2017). The AS/SVE remediation system installation activities were conducted at the Site from April through June 2017. The installation activities included trenching and installation of system piping to connect the AS and SVE wells to the remediation equipment, transport and placement of the pre-assembled system trailer and carbon vessels in the system compound area. Prior to activation of the AS/SVE remediation system, a baseline groundwater monitoring event was conducted on May 15 and 16, 2017 to evaluate the conditions of groundwater elevations and SECTIONTWO Background 2-3 dissolved COC concentrations. As part of the May 2017 baseline groundwater monitoring event, depth to groundwater measurements and groundwater samples were collected from each of the 21 groundwater monitoring wells (MW-1 through MW-21D) associated with the Site. No LNAPL was detected in any of the wells during the May 2017 baseline groundwater monitoring event. Dissolved benzene concentrations were reported above the NC GCL standard of 5,000 µg/L in groundwater samples from six (6) wells, ranging from 5,340 µg/L to 22,400 µg/L in concentration. Additionally, dissolved EDB was detected at a concentration in excess of the NC GCL standard of 50 µg/L in the groundwater samples collected from three (3) monitoring wells, ranging from 68.0 µg/L to 95.2 µg/L. The locations of the AS/SVE system compound, piping, AS wells, SVE wells, and monitoring wells are illustrated on Figure 2. The baseline groundwater monitoring event and system installation activities are detailed in the Remediation System Installation and Baseline Groundwater Monitoring Report - November 2017 (URS, 2017). The AS/SVE system was activated on June 19 and 20, 2017, with the SVE system turned on before the AS system. System upgrades/modifications were implemented to improve operation. They included replacing the vapor phase carbon vessels with a catalytic oxidizer (CatOx), upgrading the AS compressor and SVE blower motor, installing a 320-gallon condensate storage tank, and electrical and software upgrades. After activation of the AS/SVE remediation system in June 2017, the first semi-annual groundwater sampling event was conducted at the Site on January 23, 2018 and the annual groundwater sampling event was conducted in July/August 2018, to assess the effect of the remediation system on contaminant concentrations in groundwater. Compared to the May 2017 baseline groundwater monitoring event, COC concentrations for the January 2018 and the July/August 2018 sampling events indicated concentration decreases, attributable to the operation of the AS/SVE system. Results of the January 2018 and July/August 2018 sampling events, as well as the system startup and O&M activities, were summarized in the First Corrective Action Performance Report (URS, 2018), and submitted to the NCDEQ. Analytical results from samples collected during January 2019, July 2019, and January 2020 monitoring events continued to show the concentration decreases attributed to the operation of the AS/SVE system, as summarized in the Second and Third Corrective Action Performance Reports (URS, 2019 and 2020). In January 2020, the only dissolved concentration detected above the NC GCL was the benzene exceedance in MW-6. The groundwater sample from MW- 6 exceeded the NC GCL standard of 5,000 µg/L for benzene at a concentration of 7,400 µg/L and 8,900 µg/L in the well’s duplicate sample. Analytical results from samples collected during the July 2020 monitoring event continued to show decreasing concentrations of benzene at all locations except MW-6. A benzene concentration of 13,000 µg/L was reported at MW-6 but continued to be the only exceedance of SECTIONTWO Background 2-4 the NC GCL. Operational adjustments were made to the AS/SVE system, including increasing the air flow rates at AS wells near MW-6 to increase mass removal in this area. URS recommended that MW-6 be resampled in October 2020 to further assess the decreasing trend in dissolved benzene in that area. The analytical results from the resampling of MW-6 in October of 2020 reported a benzene concentration of 3,800 µg/L which is below the NC GCL standard of 5,000 µg/L for benzene. This decreasing trend continued through the January 2021 semi-annual monitoring event during which the benzene concentration detected in the sample collected from MW-6 and its duplicate sample were 2,900 µg/L and 2,800 µg/L respectively. No exceedances of NC GCL standards for COCs were reported during the resampling of MW-6 in October 2020 or the January 2021 semi- annual monitoring event. Analytical results from the January 2021 and July 2021 semi-annual monitoring events, and the April 2021 limited sampling event at monitoring well MW-6, indicated that dissolved benzene concentrations did not exceed the NC GCL of 5,000 µg/L in any of the groundwater samples collected during these monitoring events. Based on these results, it was recommended that the AS/SVE system continue to remain deactivated for post-remediation monitoring. URS and EPRC recommended conducting two semi-annual post-remediation groundwater monitoring events in January 2022 and July 2022, respectively. In a letter dated September 23, 2021, NCDEQ agreed with these recommendations. 2.4 FACILITY GEOLOGIC/HYDROGEOLOGIC SETTING The Site is located in the Piedmont physiographic province, which is characterized by moderately level interstream areas separated by broad valleys. Bedrock in Statesville, North Carolina is mapped within the Carolina Slate Belt lithologic division of the Piedmont. According to the Geologic Map of North Carolina (North Carolina Geological Survey, 1985), bedrock in the area of the Site consists of metamorphosed granitic rock. Competent bedrock in the Piedmont province of North Carolina is typically overlain by variable thicknesses of saprolite and soil, collectively referred to as “overburden”. Groundwater in the Piedmont province occurs in the overburden under unconfined (i.e., water table) conditions, and in the underlying bedrock under both unconfined and confined conditions. Groundwater in the overburden occurs within pore spaces of the unconsolidated medium, including relict bedrock structures. Due to the typical fine-grained nature of saprolite, the formation normally has a relatively low permeability and is not generally utilized for groundwater production. Groundwater in the underlying bedrock occurs along zones of secondary porosity, such as fractures, bedding planes, foliations, solution voids, etc. Most water supply wells in the Piedmont are completed in bedrock. SECTIONTWO Background 2-5 Currently, eighteen (18) shallow Type II monitoring wells (MW-1 and MW-3 through MW-16, MW-18 through MW-20), three (3) deep Type III monitoring wells (MW-2D, MW-17D, and MW-21D), twenty-one (21) AS wells (AS-1 and AS-2R through AS-21), and fourteen (14) SVE wells (SVE-1 through SVE-14) are present at the Site. Well construction details are provided in Table 1. On-site borings encountered silt, silty clay, and clayey silt in the form of saprolite, with trace sand and gravel to a depth of at least 75 ft bgs. The Type II monitoring wells are screened across the water table in the saprolitic overburden beneath the Site, and the Type III monitoring wells are double-cased through the water table and screened in a deeper portion of the saprolite. The AS wells are single-cased wells with 2 feet of screen installed approximately 20 feet to 35 feet below the water table. The SVE wells are single-cased wells screened through the vadose zone in the saprolitic overburden beneath the Site. Hydraulic conductivity of the surficial aquifer at the Site was initially estimated using well recovery data collected from monitoring wells MW-1, MW-3, and MW-8 (Handex, 2004). Based on a calculated average hydraulic conductivity of 0.236 foot per day, an average hydraulic gradient of 0.015 foot per foot (ft/ft), and an estimated effective porosity of 0.15, the average groundwater velocity was estimated to be 0.02 foot per day or 8.61 feet per year in 2004. The hydraulic gradient estimated across the Site towards the southwest in June 2016 was 0.012 ft/ft (URS, 2016), 0.013 ft/ft in May 2017 (URS, 2017), 0.013 ft/ft in January and July 2018 (URS, 2018), 0.013 ft/ft and 0.016 ft/ft in January and July 2019, respectively (URS, 2019), 0.017 ft/ft and 0.0015 ft/ft in January and July 2020, respectively (URS, 2020a and 2020b), and 0.016 ft/ft and 0.017 ft/ft in January 2021 and July 2021 (URS, 2021a and 2021b). Based on groundwater elevation data collected during the January and July 2022 groundwater monitoring events, the hydraulic gradient at the Site was estimated to be 0.015 ft/ft to the south/southwest (between monitoring wells MW-10 and MW-20). SECTIONTHREE Groundwater Monitoring 3-1 3.0 GROUNDWATER MONITORING 3.1 SEMI-ANNUAL GROUNDWATER MONITORING EVENT - JANUARY 2022 A semi-annual groundwater monitoring event was conducted at the Site on January 19, 2022. All 21 Site groundwater monitoring wells (MW-1 through MW-21D) were gauged for depth to water and LNAPL, and six groundwater monitoring wells (MW-1, MW-2D, MW-6, MW-14, MW-16, and MW-18) were sampled. An electronic oil/water interface meter was used to measure the depth-to-groundwater at the Site monitoring wells. A YSI Pro Plus handheld instrument was used to measure groundwater field parameters of pH, temperature, specific conductance, and dissolved oxygen in the monitoring wells selected for groundwater sampling. Prior to the collection of groundwater samples, the wells were purged of a minimum of three well volumes, or until dry, using new, disposable, bottom-loading bailers and bailer cord. Sampling personnel wore new nitrile gloves, changed between each well, for sample collection. Groundwater samples collected during the event were submitted to Eurofins Environment Testing Southeast, LLC (Eurofins) in Pensacola, Florida, under chain-of-custody documentation. The sampling procedures and analysis were conducted in general accordance with the North Carolina Department of Environment and Natural Resources (NCDENR) - UST Section guidance document, Guidelines for Assessment and Corrective Action (NCDENR, 2008), and the assessment and corrective action requirements of 15A NCAC 2L.0115. Eurofins analyzed the groundwater samples for benzene, toluene, ethylbenzene and total xylenes (BTEX), methyl tert- butyl ether (MTBE), EDB, and naphthalene using Environmental Protection Agency (EPA) Method 6200B. For quality assurance, a field duplicate sample was collected at one monitoring well during the event, labeled as DUP on the chain-of-custody, and analyzed by the method referenced above. Groundwater gauging data are provided in Table 2. A summary of field parameter measurements for the sampling event is provided in Table 3. A copy of the laboratory reports including chains-of-custody are provided in Appendix A. 3.2 RESAMPLING OF MW-6 AND MW-14 – MARCH 2022 In order to further evaluate changes in COC concentrations, URS personnel mobilized to the site on March 21, 2022 to collect groundwater samples from monitoring wells MW-6 and MW-14. An electronic oil/water interface meter was used to measure the depth-to-groundwater at MW-6 and MW-14. A YSI Pro Plus handheld instrument was used to measure groundwater field parameters of pH, temperature, specific conductance, and dissolved oxygen. Prior to the collection of the groundwater samples, MW-6 and MW-14 were purged of a minimum of three SECTIONTHREE Groundwater Monitoring 3-2 well volumes, or until dry, using new, disposable, bottom-loading bailers and bailer cord. Sampling personnel wore new nitrile gloves for sample collection. The groundwater samples collected from MW-6 and MW-14 was submitted to Eurofins, under chain-of-custody documentation. The sampling procedures and analysis were conducted in general accordance with the NCDENR - UST Section guidance document, Guidelines for Assessment and Corrective Action (NCDENR, 2008), and the assessment and corrective action requirements of 15A NCAC 2L .0115. Eurofins analyzed the groundwater sample for BTEX, MTBE, EDB, and naphthalene using EPA Method 6200B. Groundwater gauging data is provided in Table 2. A summary of field parameter measurements for the sampling event is provided in Table 3. A copy of the laboratory reports including chains- of-custody are provided in Appendix A. 3.3 SEMI-ANNUAL GROUNDWATER MONITORING EVENT - JULY 2022 A semi-annual groundwater monitoring event was conducted at the Site on July 20, 2022. All 21 Site groundwater monitoring wells (MW-1 through MW-21D) were gauged for depth to water and LNAPL, and six groundwater monitoring wells (MW-1, MW-2D, MW-6, MW-14, MW-16, and MW-18) were sampled. An electronic oil/water interface meter was used to measure the depth-to-groundwater at the Site monitoring wells. A YSI Pro Plus handheld instrument was used to measure groundwater field parameters of pH, temperature, specific conductance, and dissolved oxygen in the monitoring wells selected for groundwater sampling. Prior to the collection of groundwater samples, the wells were purged of a minimum of three well volumes, or until dry, using new, disposable, bottom-loading bailers and bailer cord. Sampling personnel wore new nitrile gloves, changed between each well, for sample collection. Groundwater samples collected during the event were submitted to Eurofins in Pensacola, Florida, under chain-of-custody documentation. The sampling procedures and analysis were conducted in general accordance with the NCDENR - UST Section guidance document, Guidelines for Assessment and Corrective Action (NCDENR, 2008), and the assessment and corrective action requirements of 15A NCAC 2L .0115. Eurofins analyzed each groundwater sample for BTEX, MTBE, EDB, and naphthalene using EPA Method 6200B. For quality assurance, a field duplicate sample was collected at one monitoring well during the event, labeled as DUP on the chain-of-custody, and analyzed by the method referenced above. Groundwater gauging data are provided in Table 2. A summary of field parameter measurements for the sampling event is provided in Table 3. A copy of the laboratory reports including chains-of-custody are provided in Appendix A SECTIONFOUR System Operations 4-1 4.0 SYSTEM OPERATIONS Between the startup of the AS/SVE system in June 2017 and deactivation of the AS/SVE system on June 23, 2021, numerous site visits were conducted to maintain and improve the operation of the remediation system. Details of system visits are summarized on Table 5. Performance summaries of the AS/SVE system prior to deactivation are presented on Table 6 and Table 7, respectively. The individual airflow and pressure measurements recorded at the AS manifold and SVE manifold prior to system deactivation are summarized in Table 8 and Table 9, respectively. A summary of the SVE vapor analytical concentrations and estimated hydrocarbon mass removal rates during system operations are provided in Table 10. A plot of the cumulative hydrocarbon removal over time by the SVE system is provided in Appendix B. In December 2021, the deactivated EPRC-owned AS/SVE system trailer was removed from the site to be upgraded and operated elsewhere. SECTIONFIVE Results and Discussion 5-1 5.0 RESULTS AND DISCUSSION 5.1 GROUNDWATER GAUGING RESULTS – JANUARY 2022 AND JULY 2022 Groundwater depths and groundwater elevation data, as measured on January 19, 2022 and July 20, 2022 are provided in Table 2. The groundwater elevations for MW-6 and MW-14 collected on March 21, 2022 are also provided. During the January 2022 semi-annual monitoring event, groundwater elevation ranged from 896.78 feet above mean sea level (ft AMSL) at well MW-20 to 901.64 ft AMSL at well MW-10. Groundwater elevations as measured during the July 2022 semi-annual monitoring event ranged from 896.18 ft AMSL at well MW-20 to 901.48 ft AMSL at well MW-9. Potentiometric surface maps for the monitoring events conducted in January 2022 and July 2022 are provided as Figures 3a and 3b, respectively. The hydraulic gradient calculated using both the January 2022 and July 2022 groundwater elevation data was estimated to be 0.015 ft/ft to the south/southwest (between monitoring wells MW-10 and MW-20). Groundwater table elevations from the three deep wells (MW-2D, MW-17D and MW-21D) were not used to develop the potentiometric surface maps. 5.2 LNAPL RESULTS No LNAPL was detected in any of the wells associated with the Site during the January, March, and July 2022 groundwater monitoring events. LNAPL was last detected at the Site during the November 25, 2013 groundwater monitoring event at a thickness of 0.02 foot in monitoring well MW-6. Historical LNAPL thickness data are presented in Table 2. 5.3 GROUNDWATER ANALYTICAL RESULTS 5.3.1 Groundwater Analytical Results – January 2022 On January 19, 2022, groundwater samples were collected from six of the 21 monitoring wells associated with the Site. A review of the laboratory analytical data indicates that dissolved benzene was detected at concentrations ranging from an estimated 0.48 µg/L (MW-18) to 6,300 µg/L (MW-6). The dissolved benzene concentration detected in the groundwater sample collected from monitoring well MW-6 exceeded the NC GCL standard of 5,000 µg/L for benzene. No other COCs were detected at concentrations in excess of their respective NC GCLs during the January 2022 groundwater monitoring event. Since the previous monitoring event, conducted at the site in July 2021, dissolved benzene concentrations increased from 860 µg/L to 6,300 µg/L in the groundwater sample collected from monitoring well MW-6. SECTIONFIVE Results and Discussion 5-2 5.3.2 Groundwater Analytical Results – March 2022 Monitoring wells MW-6 and MW-14 were resampled on March 21, 2022, in order to further evaluate changes in COC concentrations at these two wells. Dissolved benzene was detected in the groundwater samples collected from monitoring wells MW-6 and MW-14 at concentrations of 6,300 µg/L and 26 µg/L, respectively. The dissolved benzene concentration detected in the groundwater sample collected from monitoring well MW-6 exceeded the NC GCL of 5,000 µg/L for benzene. The dissolved benzene concentrations detected in the groundwater samples collected during the March 2022 limited monitoring event were consistent with the dissolved benzene concentrations measured in the groundwater samples collected from the same wells during the January 2022 monitoring event. 5.3.3 Groundwater Analytical Results – July 2022 On July 20, 2022, groundwater samples were collected from six of the 21 monitoring wells associated with the site. A review of the laboratory analytical data indicates that dissolved benzene was detected at concentrations ranging from 1.1 µg/L (MW-18) to 14,000 µg/L (MW- 6). The dissolved benzene concentration detected in the groundwater sample collected from monitoring well MW-6 exceeded the NC GCL standard of 5,000 µg/L for benzene. Additionally, EDB was detected in the groundwater sample collected from monitoring well MW-6 at an estimated concentration of 50 µg/L, which is equal to the NC GCL of 50 µg/L for EDB (EDB was detected at an estimated concentration of 52 µg/L in the duplicate sample collected from MW-6). No other COCs were detected at concentrations in excess of their respective NC GCLs. Since the previous sampling events, conducted at the Site in January and March 2022, dissolved benzene and EDB concentrations have both increased in the groundwater samples collected from monitoring well MW-6. Dissolved benzene isoconcentration maps for the January 2022, March 2022, and July 2022 groundwater monitoring events are provided as Figures 4b, 4c, and 4d, respectively. To compare current benzene concentrations against the concentrations observed at the Site prior to the operation of the AS/SVE system, the benzene isoconcentration map for the baseline groundwater monitoring event, conducted at the Site in May 2017 (URS, 2017), is included as Figure 4a. The laboratory analytical results, compared to the NC GCL standards, are summarized in Table 4. 5.4 SYSTEM PROGRESS AND EFFECTIVENESS The objective of the AS system is to decrease COC concentrations in groundwater to below the NC GCLs, by means of volatilization and/or the aerobic biodegradation of COCs in the smear zone and groundwater. Time series graphs of water table depths and benzene concentrations in groundwater are provided in Appendix C. The trend graphs indicate progressive concentration SECTIONFIVE Results and Discussion 5-3 reductions in benzene following startup of the AS system in June 2017 through the shut down of the AS/SVE system in June 2021, with an increase in benzene concentrations above the NC GCL at monitoring well MW-6 following the system shut down. With operation of the AS/SVE system from June 2017 to June 2021, wells with historical COC concentrations exceeding NC GCLs had their concentrations decrease to below NC GCLs within a few months to two years after startup of the AS/SVE system. The only exception was well MW-6 which had benzene exceedances above its NC GCL through July 2020. However, with the aggressive air sparging that was implemented at AS wells in the vicinity of MW-6, volatilization and/or aerobic biodegradation processes appeared to have caused a reduction in dissolved benzene concentrations to below its NC GCL as indicated by the analytical results through July 2021. However, based on the laboratory analytical data for the two groundwater monitoring events (and one limited groundwater resampling event) conducted at the Site since the deactivation of the AS/SVE system in June 2021, dissolved benzene concentrations have increased in the groundwater samples collected from monitoring well MW-6. The objective of the SVE system is to remove hydrocarbons from the vadose zone and to recover the hydrocarbon vapors created by the AS system. The hydrocarbon mass removal rate by the SVE system had reduced from a high of approximately 827 pounds per day (lbs/day) in August 2017 to approximately 68 lbs/day in May 2021 (Table 10). Based on the decrease in the hydrocarbon mass removal rates, and the decrease in dissolved benzene concentrations in the Site wells to below the NC GCLs, the AS/SVE system was deactivated in June 2021. A graph depicting the cumulative hydrocarbon mass removal over time is included as Appendix B. SECTIONSIX Conclusions 6-1 6.0 CONCLUSIONS Based on review of the data presented in this report, the following conclusions can be made regarding the remediation at the Site:  Since the May 2017 baseline groundwater monitoring event, concentrations of COCs have decreased at the Site. Six (6) wells had benzene NC GCL exceedances during the May 2017 baseline groundwater monitoring event. Laboratory analytical results for the January, March, and July 2022 monitoring events, indicated the presence of dissolved benzene at concentrations in excess of the NC GCL for benzene (5,000 µg/L) in one well (MW-6) at concentrations ranging from 6,300 µg/L (January and March 2022) to 14,000 µg/L (July 2022). Additionally, EDB was detected at an estimated concentration equal to the NC GCL for EDB (50 µg/L) in the groundwater sample collected from MW-6 during the July 2022 monitoring event. EDB was detected at an estimated concentration of 52 µg/L in the duplicate sample collected from MW-6 during the July 2022 monitoring event.  To decrease COC concentrations in groundwater in the vicinity of MW-6 to levels below NC GCL, expansion of the AS and SVE well array in that area of the site is warranted. Additional site characterization (soil and groundwater sampling) in the vicinity of MW-6 should be conducted to evaluate the extent of remaining hydrocarbon in this area and select the optimal locations for installation of additional AS and SVE wells to operate with an AS/SVE system. SECTIONSEVEN RECOMMENDATIONS 7-1 7.0 RECOMMENDATIONS Based on review of the data presented in this report, the following recommendations are made:  URS and EPRC recommend additional site characterization (soil and groundwater sampling) in the vicinity of MW-6. Results of this investigation will be presented in a Comprehensive Site Assessment (CSA) Report Addendum and will be used to further evaluate the extent of remaining hydrocarbon in the vicinity of MW-6 to select the optimal locations for installation of additional AS and SVE wells.  Following submittal of the CSA Report Addendum, and approval by NCDEQ, URS and EPRC recommend installing additional AS and SVE wells in the vicinity of MW- 6 to operate with an AS/SVE system. SECTIONEIGHT References 8-1 8.0 REFERENCES Handex of Florida, Inc., 2004, Comprehensive Site Assessment, March 5, 2004. NCDENR, 2008, Guidelines for Assessment and Corrective Action, July 15, 2008. NCGS, 1985, Geologic Map of North Carolina. North Carolina Geological Survey, 1985. URS Corporation, 2014a, Corrective Action Plan, January 30, 2014. URS Corporation, 2014b, Groundwater Monitoring Report – April 2014, May 21, 2014. URS Corporation, 2016, Groundwater Monitoring Report – June 2016, July 25, 2016. URS Corporation, 2017, Remediation System Installation and Baseline Groundwater Monitoring Report – November 2017, November 6, 2017. URS Corporation, 2018, First Corrective Action Performance Report, October 26, 2018. URS Corporation, 2019, Second Corrective Action Performance Report, September 27, 2019. URS Corporation, 2020a, Third Corrective Action Performance Report, March 24, 2020. URS Corporation, 2020b, Fourth Corrective Action Performance Report, September 21, 2020. URS Corporation, 2021a, Fifth Corrective Action Performance Report, March 26, 2021. URS Corporation 2021b, Sixth Corrective Action Performance Report, September 17, 2021. U.S. EPA, 1999, USEPA Contract Laboratory Program National Functional Guidelines for Organic Data Review, U.S. Environmental Protection Agency Office of Emergency and Remedial Response. EPA/540/R-99/008. TABLES Well Well Type Date Installed Top Of Casing Elevation2 (ft above MSL3) Well Diameter (inches) Total De th (ft bls) MW-1 Type II 11/19/01 938.49 2" 33.60 - 48.60 48.60 MW-2D Type III 08/29/02 938.91 2" 70.00 - 75.00 75.00 MW-3 Type II 08/28/02 936.32 2" 40.00 - 60.00 60.00 MW-4 Type II 08/28/02 933.16 2" 40.00 - 60.00 60.00 MW-5 Type II 08/27/02 938.85 2" 40.00 - 60.00 60.00 MW-6 Type II 11/06/03 938.44 2" 35.00 - 55.00 55.00 MW-7 Type II 11/04/03 933.07 2" 30.00 - 50.00 50.00 MW-8 Type II 11/03/03 932.49 2" 30.00 - 50.00 50.00 MW-9 Type II 11/04/03 939.90 2" 35.00 - 55.00 55.00 MW-10 Type II 11/03/03 939.45 2" 35.00 - 55.00 55.00 MW-11 Type II 11/04/03 939.02 2" 35.00 - 55.00 55.00 MW-12 Type II 11/05/03 938.81 2" 35.00 - 55.00 55.00 MW-13 Type II 11/05/03 939.04 2" 35.00 - 55.00 55.00 MW-14 Type II 11/06/03 939.40 2" 35.00 - 55.00 55.00 MW-15 Type II 12/02/10 937.72 2" 33.00 - 53.00 53.00 MW-16 Type II 01/10/13 937.58 2" 31.00 - 56.00 56.00 MW-17D Type III 01/10/13 936.30 2" 73.00 - 75.00 75.00 MW-18 Type II 11/19/13 937.87 2" 35.00 - 65.00 65.00 MW-19 Type II 11/19/13 937.80 2" 35.00 - 65.00 65.00 MW-20 Type II 02/28/17 930.27 2" 30.00 - 55.00 55.00 MW-21D Type III 02/28/17 930.36 2" 72.00 - 75.00 75.00 AS-1 Type II 11/18/13 938.39 2" 73.00 - 75.00 75.00 AS-2R Type II 10/21/16 938.21 2" 58.00 - 60.00 60.00 AS-3 Type II 10/24/16 938.14 2" 63.00 - 65.00 65.00 AS-4 Type II 10/05/16 939.03 2" 58.00 - 60.00 60.00 AS-5 Type II 10/11/16 939.06 2" 73.00 - 75.00 75.00 AS-6 Type II 10/17/16 939.08 2" 64.00 - 66.00 66.00 AS-7 Type II 10/24/16 938.42 2" 75.00 - 77.00 77.00 AS-8 Type II 10/10/16 938.67 2" 58.00 - 60.00 60.00 AS-9 Type II 10/05/16 938.94 2" 73.00 - 75.00 75.00 AS-10 Type II 10/04/16 939.37 2" 58.00 - 60.00 60.00 AS-11 Type II 10/04/16 939.65 2" 73.00 - 75.00 75.00 AS-12 Type II 10/03/16 938.99 2" 73.00 - 75.00 75.00 AS-13 Type II 10/10/16 938.89 2" 58.00 - 60.00 60.00 AS-14 Type II 10/03/16 939.57 2" 58.00 - 60.00 60.00 AS-15 Type II 10/03/16 939.94 2" 58.00 - 60.00 60.00 AS-16 Type II 10/04/16 939.10 2" 73.00 - 75.00 75.00 AS-17 Type II 10/13/16 938.11 2" 73.00 - 75.00 75.00 AS-18 Type II 10/13/16 938.57 2" 73.00 - 75.00 75.00 AS-19 Type II 10/14/16 937.60 2" 58.00 - 60.00 60.00 Table 1 Well Construction Details1 Former Coastal Mart No. 443 Screened Interval (ft bls4) 1237 West Front Street Statesville, Iredell County, North Carolina Page 1 of 2 Well Well Type Date Installed Top Of Casing Elevation2 (ft above MSL3) Well Diameter (inches) Total De th (ft bls) Table 1 Well Construction Details1 Former Coastal Mart No. 443 Screened Interval (ft bls4) 1237 West Front Street Statesville, Iredell County, North Carolina AS-20 Type II 10/13/16 938.12 2" 58.00 - 60.00 60.00 AS-21 Type II 10/13/17 938.18 2" 58.00 - 60.00 60.00 SVE-1 Type II 11/20/13 938.31 4" 25.00 - 40.00 40.00 SVE-2 Type II 10/18/16 938.14 4" 22.00 - 42.00 42.00 SVE-3 Type II 10/18/16 938.92 4" 16.00 - 36.00 36.00 SVE-4 Type II 10/12/16 938.94 4" 15.00 - 35.00 35.00 SVE-5 Type II 10/19/16 938.18 4" 19.00 - 39.00 39.00 SVE-6 Type II 10/13/16 938.44 4" 15.00 - 35.00 35.00 SVE-7 Type II 10/13/16 938.94 4" 15.00 - 35.00 35.00 SVE-8 Type II 10/12/16 938.78 4" 15.00 - 35.00 35.00 SVE-9 Type II 10/12/16 939.36 4" 15.00 - 35.00 35.00 SVE-10 Type II 10/12/16 939.34 4" 15.00 - 35.00 35.00 SVE-11 Type II 10/13/16 938.85 4" 15.00 - 35.00 35.00 SVE-12 Type II 10/17/16 936.48 4" 15.00 - 35.00 35.00 SVE-13 Type II 10/17/16 937.08 4" 15.00 - 35.00 35.00 SVE-14 Type II 10/17/16 937.35 4" 15.00 - 35.00 35.00 NOTES: 3. MSL = Mean Sea Level 4. bls = below land surface 2. On October 15, 2018, URS Corporation re-surveyed the top of casing and ground surface elevation of monitoring wells MW-1, MW-2D, MW-6, MW-15, MW-16, MW-17D, MW-18, and MW-19. 1. URS Corporation is not responsible for data generated prior to 2004. Data included on this table not generated by, or on behalf of, URS Corporation (URS) has been taken from documents prepared and submitted to the NCDEQ by Others and is included only for ease of reference; URS does not assume or accept any responsibility or liability for the quality, accuracy, or completeness of the data included on this table that was not enerated b or on behalf of URS. Page 2 of 2 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) 11/20/01 ND 47.90 ND 52.10 02/12/02 48.45 48.60 0.15 51.53 08/29/02 48.42 48.60 0.18 51.55 09/04/02 DRY DRY DRY DRY 10/29/02 48.44 48.46 0.02 51.56 11/25/02 DRY DRY DRY DRY 03/10/03 ND 48.43 ND 51.57 05/28/03 47.10 47.25 0.15 52.88 11/07/03 43.99 44.03 0.04 56.00 11/8/05 (12:45) 45.81 45.82 0.01 54.19 11/9/05 (09:00) ND 44.85 ND 55.15 11/9/05 (18:05) ND 44.76 ND 55.24 pre-AFVR (12/12/06) 42.02 42.24 0.22 57.95 post-AFVR (12/12/06) ND 47.24 ND 52.76 06/19/07 ND 45.50 ND 54.50 09/11/08 ND 47.98 ND 52.02 05/18/09 47.65 48.33 0.68 52.25 03/26/10 ND 44.25 ND 55.75 06/03/10 ND 43.66 ND 56.34 12/17/10 ND 43.59 ND 56.41 Pre-MMPE (07/11/11) ND 44.23 ND 55.77 Post-MMPE (07/15/11) ND 45.39 ND 54.61 08/16/11 ND 44.48 ND 55.52 Pre-MMPE (01/16/12) 45.41 45.50 0.09 54.58 Post-MMPE (01/20/12) ND 48.03 ND 51.97 02/20/12 ND 45.50 ND 54.50 06/19/12 ND 45.58 ND 54.42 Pre-MMPE (01/14/13) 46.13 46.19 0.06 53.86 Post-MMPE (01/18/13) ND 48.19 ND 51.81 02/20/13 ND 46.23 ND 53.77 Pre-MMPE (07/29/13) ND 44.34 ND 55.66 Post-MMPE (08/02/13) ND 48.32 ND 51.68 09/05/13 ND 43.61 ND 56.39 04/24/14 ND 42.02 ND 896.67 06/07/16 ND 41.57 ND 897.12 05/15/17 ND 43.22 ND 895.47 01/23/18 ND 41.42 ND 897.27 07/10/18 08/14/18 ND 41.29 ND 897.20 01/07/19 ND 39.34 ND 899.15 07/16/19 ND 38.96 ND 899.53 01/09/20 ND 40.56 ND 897.93 07/16/20 ND 30.36 ND 908.13 01/12/21 ND 34.82 ND 903.67 07/13/21 ND 35.03 ND 903.46 01/19/22 ND 37.50 ND 900.99 07/20/22 ND 38.63 ND 899.86 Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 100.00 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 Obstructed by mud at 47.70 ft 938.49 MW-1 938.69 Page 1 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 08/29/02 NG NG NG NG 09/04/02 ND 50.75 ND 49.63 10/29/02 ND 50.85 ND 49.53 11/25/02 ND 50.96 ND 49.42 03/10/03 ND 49.52 ND 50.86 05/28/03 ND 47.70 ND 52.68 11/07/03 ND 45.13 ND 55.25 11/08/05 ND 45.48 ND 54.90 pre-AFVR (12/12/06) ND 46.14 ND 54.24 post-AFVR (12/12/06) ND 47.14 ND 53.24 06/19/07 ND 46.48 ND 53.90 09/11/08 ND 49.56 ND 50.82 05/18/09 ND 48.45 ND 51.93 03/26/10 ND 45.17 ND 55.21 06/03/10 ND 44.40 ND 55.98 12/17/10 ND 44.81 ND 55.57 Pre-MMPE (07/11/11) ND 45.23 ND 55.15 Post-MMPE (07/15/11) ND 45.49 ND 54.89 08/16/11 ND 45.47 ND 54.91 Pre-MMPE (01/16/12) ND 46.51 ND 53.87 Post-MMPE (01/20/12) ND 46.72 ND 53.66 02/20/12 ND 46.48 ND 53.90 06/19/12 ND 46.50 ND 53.88 Pre-MMPE (01/14/13) ND 47.20 ND 53.18 Post-MMPE (01/18/13) ND 47.75 ND 52.63 02/20/13 ND 47.33 ND 53.05 Pre-MMPE (07/29/13) ND 45.30 ND 55.08 Post-MMPE (08/02/13) ND 45.41 ND 54.97 09/05/13 ND 44.61 ND 55.77 04/24/14 ND 43.09 ND 895.99 06/07/16 ND 43.00 ND 896.08 05/15/17 ND 43.94 ND 895.13 01/23/18 ND 43.42 ND 895.65 07/10/18 ND 50.11 ND 888.80 01/07/19 ND 41.75 ND 897.16 07/16/19 ND 39.17 ND 899.74 01/09/20 ND 40.95 ND 897.96 07/16/20 ND 39.28 ND 899.63 01/12/21 ND 36.82 ND 902.09 07/13/21 ND 37.02 ND 901.89 01/19/22 ND 40.02 ND 898.89 07/20/22 ND 40.72 ND 898.19 08/29/02 ND 47.46 ND 50.57 09/04/02 ND 47.76 ND 50.27 10/29/02 ND 48.02 ND 50.01 11/25/02 ND 48.22 ND 49.81 03/10/03 ND 46.78 ND 51.25 939.08 938.91 939.07 MW-2D 100.38 MW-3 98.03 Page 2 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 05/28/03 ND 44.89 ND 53.14 11/07/03 ND 42.03 ND 56.00 11/08/05 ND 43.13 ND 54.90 12/12/06 ND 44.13 ND 53.90 06/19/07 ND 43.75 ND 54.28 09/11/08 ND 46.94 ND 51.09 05/18/09 ND 45.74 ND 52.29 03/26/10 ND 42.57 ND 55.46 06/03/10 ND 41.65 ND 56.38 12/17/10 ND 42.20 ND 55.83 Pre-MMPE (07/11/11) ND 42.64 ND 55.39 Post-MMPE (07/15/11) ND 42.86 ND 55.17 08/16/11 ND 42.93 ND 55.10 Pre-MMPE (01/16/12) ND 44.01 ND 54.02 Post-MMPE (01/20/12) ND 44.26 ND 53.77 02/20/12 ND 44.08 ND 53.95 06/19/12 ND 44.04 ND 53.99 Pre-MMPE (01/14/13) ND 44.75 ND 53.28 Post-MMPE (01/18/13) ND 45.06 ND 52.97 02/20/13 ND 44.54 ND 53.49 Pre-MMPE (07/29/13) ND 42.42 ND 55.61 Post-MMPE (08/02/13) ND 42.82 ND 55.21 09/05/13 ND 41.65 ND 56.38 04/24/14 ND 40.18 ND 896.14 06/07/16 ND 39.69 ND 896.63 05/15/17 ND 41.49 ND 894.83 01/23/18 ND 40.32 ND 896.00 07/10/18 ND 46.71 ND 889.61 01/07/19 ND 37.92 ND 898.40 07/16/19 ND 36.60 ND 899.72 01/09/20 ND 38.48 ND 897.84 07/16/20 ND 36.51 ND 899.81 01/12/21 ND 33.51 ND 902.81 07/13/21 ND 33.91 ND 902.41 01/19/22 ND 36.97 ND 899.35 07/20/22 ND 37.68 ND 898.64 08/29/02 ND 44.44 ND 49.99 09/04/02 ND 44.48 ND 49.95 10/29/02 ND 44.88 ND 49.55 11/25/02 ND 44.78 ND 49.65 03/10/03 ND 43.20 ND 51.23 05/28/03 ND 41.16 ND 53.27 11/07/03 ND 38.63 ND 55.80 11/08/05 ND 39.65 ND 54.78 12/12/06 ND 41.06 ND 53.37 06/19/07 ND 40.42 ND 54.01 09/11/08 ND 43.54 ND 50.89 936.32 MW-3 (cont) 98.03 94.43MW-4 Page 3 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 05/18/09 ND 42.45 ND 51.98 03/26/10 ND 39.17 ND 55.26 06/03/10 ND 38.29 ND 56.14 12/17/10 ND 39.04 ND 55.39 Pre-MMPE (07/11/11) ND 41.40 ND 53.03 Post-MMPE (07/15/11) ND 39.51 ND 54.92 08/16/11 ND 39.73 ND 54.70 Pre-MMPE (01/16/12) ND 40.81 ND 53.62 Post-MMPE (01/20/12) ND 40.80 ND 53.63 02/20/12 ND 40.85 ND 53.58 06/19/12 ND 40.76 ND 53.67 Pre-MMPE (01/14/13) ND 41.63 ND 52.80 Post-MMPE (01/18/13) ND 41.75 ND 52.68 02/20/13 ND 41.60 ND 52.83 Pre-MMPE (07/29/13) ND 39.37 ND 55.06 Post-MMPE (08/02/13) ND 39.41 ND 55.02 09/05/13 ND 38.56 ND 55.87 04/24/14 ND 37.26 ND 895.90 06/07/16 ND 36.75 ND 896.41 05/15/17 ND 38.55 ND 894.61 01/23/18 ND 37.81 ND 895.35 07/10/18 ND 37.90 ND 895.26 08/14/18 ND 36.59 ND 896.57 01/07/19 ND 34.95 ND 898.21 07/16/19 ND 33.55 ND 899.61 01/09/20 ND 35.19 ND 897.97 07/16/20 ND 33.10 ND 900.06 01/12/21 ND 31.85 ND 901.31 07/13/21 ND 31.60 ND 901.56 01/19/22 ND 34.55 ND 898.61 07/20/22 ND 35.22 ND 897.94 08/29/02 ND 50.00 ND 50.11 09/04/02 ND 50.37 ND 49.74 10/29/02 ND 50.85 ND 49.26 11/25/02 ND 50.80 ND 49.31 03/10/03 ND 49.41 ND 50.70 05/28/03 ND 47.69 ND 52.42 11/07/03 44.73 44.78 0.05 55.37 11/08/05 ND 45.59 ND 54.52 12/12/06 ND 46.62 ND 53.49 06/19/07 ND 45.98 ND 54.13 09/11/08 ND 49.09 ND 51.02 05/18/09 ND 48.18 ND 51.93 03/26/10 ND 44.74 ND 55.37 06/03/10 ND 43.90 ND 56.21 12/17/10 ND 44.09 ND 56.02 Pre-MMPE (07/11/11) ND 44.56 ND 55.55 933.16 MW-5 100.11 MW-4 (cont) 94.43 Page 4 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 Post-MMPE (07/15/11) ND 44.67 ND 55.44 08/16/11 ND 44.76 ND 55.35 Pre-MMPE (01/16/12) ND 45.77 ND 54.34 Post-MMPE (01/20/12) ND 45.71 ND 54.40 02/20/12 ND 45.81 ND 54.30 06/19/12 ND 45.85 ND 54.26 Pre-MMPE (01/14/13) ND 46.51 ND 53.60 Post-MMPE (01/18/13) ND 46.78 ND 53.33 02/20/13 ND 46.54 ND 53.57 Pre-MMPE (07/29/13) ND 44.67 ND 55.44 Post-MMPE (08/02/13) ND 44.66 ND 55.45 09/05/13 ND 43.98 ND 56.13 04/24/14 ND 42.51 ND 896.34 06/07/16 ND 41.98 ND 896.87 05/15/17 ND 43.31 ND 895.54 01/23/18 ND 42.23 ND 896.62 07/10/18 01/07/19 ND 41.43 ND 897.42 07/16/19 ND 39.05 ND 899.80 01/09/20 ND 41.60 ND 897.25 07/16/20 ND 40.19 ND 898.66 01/12/21 ND 35.66 ND 903.19 07/13/21 ND 35.72 ND 903.13 01/19/22 ND 38.43 ND 900.42 07/20/22 ND 39.01 ND 899.84 11/07/03 44.16 44.21 0.05 55.48 11/8/05 (13:00) 44.19 44.23 0.04 55.45 11/9/05 (09:20) 44.25 44.26 0.01 55.40 11/9/05 (18:00) 44.15 44.16 0.01 55.50 pre-AFVR (12/12/06) 45.40 45.64 0.24 54.22 post-AFVR (12/12/06) 42.24 42.29 0.05 57.40 6/19/2007 ND 44.92 ND 54.73 9/11/2008 47.72 49.15 1.43 51.73 05/18/09 46.16 50.49 4.33 52.88 03/26/10 43.52 44.98 1.46 55.92 06/03/10 43.11 43.51 0.40 56.48 12/17/10 43.04 43.19 0.15 56.59 Pre-MMPE (07/11/11) 43.64 43.87 0.23 55.98 Post-MMPE (07/15/11) ND 49.85 ND 49.80 08/16/11 43.96 43.97 0.01 55.69 Pre-MMPE (01/16/12) 44.89 45.10 0.21 54.73 Post-MMPE (01/20/12) 50.95 50.97 0.02 48.70 02/20/12 45.00 45.04 0.04 54.64 06/19/12 45.04 45.18 0.14 54.59 Pre-MMPE (01/14/13) 45.62 45.64 0.02 54.03 Post-MMPE (01/18/13) ND 51.92 ND 47.73 02/20/13 45.80 45.81 0.01 53.85 938.85 Obstructed by mud at 50.0 ft 100.11 MW-5 (cont) MW-6 99.65 Page 5 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 Pre-MMPE (07/29/13) 43.91 44.04 0.13 55.72 Post-MMPE (08/02/13) ND 53.55 ND 46.10 09/05/13 Sheen 43.30 Sheen 56.35 11/25/13 42.52 42.54 0.02 895.82 12/03/13 ND 42.36 ND 895.98 12/04/13 ND 41.96 ND 896.38 04/24/14 ND 41.75 ND 896.59 06/07/16 ND 41.14 ND 897.20 05/15/17 ND 42.65 ND 895.69 01/23/18 ND 41.05 ND 897.29 07/10/18 ND 45.69 ND 892.75 01/07/19 ND 39.18 ND 899.26 07/16/19 ND 38.29 ND 900.15 01/09/20 ND 39.38 ND 899.06 07/16/20 ND 39.39 ND 899.05 10/21/20 ND 37.52 ND 900.92 01/12/21 ND 34.62 ND 903.82 04/15/21 ND 40.92 ND 897.52 07/13/21 ND 35.13 ND 903.31 01/19/22 ND 37.31 ND 901.13 03/21/22 ND 38.14 ND 900.30 07/20/22 ND 38.38 ND 900.06 11/07/03 ND 38.53 ND 55.80 11/08/05 ND 39.59 ND 54.74 12/12/06 ND 40.75 ND 53.58 06/19/07 ND 40.39 ND 53.94 09/11/08 ND 43.30 ND 51.03 05/18/09 ND 42.16 ND 52.17 03/26/10 ND 39.04 ND 55.29 06/03/10 ND 38.35 ND 55.98 12/17/10 ND 39.06 ND 55.27 Pre-MMPE (07/11/11) ND 39.43 ND 54.90 Post-MMPE (07/15/11) ND 39.49 ND 54.84 08/16/11 ND 39.78 ND 54.55 Pre-MMPE (01/16/12) ND 39.73 ND 54.60 Post-MMPE (01/20/12) ND 40.70 ND 53.63 02/20/12 ND 40.80 ND 53.53 06/19/12 ND 40.77 ND 53.56 Pre-MMPE (01/14/13) ND 41.73 ND 52.60 Post-MMPE (01/18/13) ND 41.81 ND 52.52 02/20/13 ND 41.58 ND 52.75 Pre-MMPE (07/29/13) ND 39.28 ND 55.05 Post-MMPE (08/02/13) ND 39.20 ND 55.13 09/05/13 ND 38.58 ND 55.75 938.44 938.34 99.65 MW-6 (cont) 94.33MW-7 Page 6 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 04/24/14 ND 37.38 ND 895.69 06/07/16 ND 36.98 ND 896.09 05/15/17 ND 38.52 ND 894.55 01/23/18 ND 38.15 ND 894.92 07/10/18 ND 37.24 ND 895.83 01/07/19 ND 35.18 ND 897.89 07/16/19 ND 33.68 ND 899.39 01/09/20 ND 34.97 ND 898.10 07/16/20 ND 33.04 ND 900.03 01/12/21 ND 31.77 ND 901.30 07/13/21 ND 32.09 ND 900.98 01/19/22 ND 34.49 ND 898.58 07/20/22 ND 35.36 ND 897.71 11/07/03 ND 39.75 ND 54.01 11/08/05 ND 39.97 ND 53.79 12/12/06 NM NM NM NM 06/19/07 ND 40.44 ND 53.32 09/11/08 ND 43.52 ND 50.24 05/18/09 ND 42.39 ND 51.37 03/26/10 ND 39.19 ND 54.57 06/03/10 ND 38.31 ND 55.45 12/17/10 NM NM NM NM Pre-MMPE (07/11/11) ND 39.51 ND 54.25 Post-MMPE (07/15/11) ND 39.58 ND 54.18 08/16/11 ND 39.84 ND 53.92 Pre-MMPE (01/16/12) ND 40.92 ND 52.84 Post-MMPE (01/20/12) ND 40.89 ND 52.87 02/20/12 ND 40.91 ND 52.85 06/19/12 ND 40.83 ND 52.93 Pre-MMPE (01/14/13) ND 41.74 ND 52.02 Post-MMPE (01/18/13) ND 41.77 ND 51.99 02/20/13 ND 41.65 ND 52.11 Pre-MMPE (07/29/13) ND 39.41 ND 54.35 Post-MMPE (08/02/13) ND 39.36 ND 54.40 09/05/13 ND 38.71 ND 55.05 04/24/14 ND 37.42 ND 895.07 06/07/16 ND 36.99 ND 895.50 05/15/17 ND 38.77 ND 893.72 01/23/18 ND 38.13 ND 894.36 07/10/18 ND 37.86 ND 894.63 08/14/18 ND 37.03 ND 895.46 01/07/19 ND 35.62 ND 896.87 07/16/19 ND 34.01 ND 898.48 01/09/20 ND 35.84 ND 896.65 07/16/20 ND 33.54 ND 898.95 MW-8 932.49 93.76 933.07MW-7 (cont) Page 7 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 01/12/21 ND 31.89 ND 900.60 07/13/21 ND 32.10 ND 900.39 01/19/22 ND 35.20 ND 897.29 07/20/22 ND 35.77 ND 896.72 11/07/03 ND 46.46 ND 54.73 11/08/05 ND 47.30 ND 53.89 12/12/06 ND 48.08 ND 53.11 06/19/07 ND 47.48 ND 53.71 09/11/08 ND 50.65 ND 50.54 05/18/09 ND 49.64 ND 51.55 03/26/10 ND 46.06 ND 55.13 06/03/10 ND 45.19 ND 56.00 12/17/10 ND 45.29 ND 55.90 Pre-MMPE (07/11/11) ND 45.74 ND 55.45 Post-MMPE (07/15/11) ND 45.79 ND 55.40 08/16/11 ND 45.89 ND 55.30 Pre-MMPE (01/16/12) ND 46.83 ND 54.36 Post-MMPE (01/20/12) ND 46.70 ND 54.49 02/20/12 ND 46.80 ND 54.39 06/19/12 ND 46.90 ND 54.29 Pre-MMPE (01/14/13) ND 47.49 ND 53.70 Post-MMPE (01/18/13) ND 47.62 ND 53.57 02/20/13 ND 47.53 ND 53.66 Pre-MMPE (07/29/13) ND 45.64 ND 55.55 Post-MMPE (08/02/13) ND 45.54 ND 55.65 09/05/13 ND 44.90 ND 56.29 04/24/14 ND 43.51 ND 896.39 06/07/16 ND 43.21 ND 896.69 05/15/17 ND 44.51 ND 895.39 01/23/18 ND 43.41 ND 896.49 07/10/18 ND 43.43 ND 896.47 01/07/19 ND 41.11 ND 898.79 07/16/19 ND 38.90 ND 901.00 01/09/20 ND 46.64 ND 893.26 07/16/20 ND 38.49 ND 901.41 01/12/21 ND 36.54 ND 903.36 07/13/21 ND 36.40 ND 903.50 01/19/22 ND 39.90 ND 900.00 07/20/22 ND 38.42 ND 901.48 11/07/03 ND 45.60 ND 55.13 11/08/05 ND 45.92 ND 54.81 12/12/06 ND 47.75 ND 52.98 06/19/07 ND 46.08 ND 54.65 09/11/08 ND 49.33 ND 51.40 05/18/09 ND 48.34 ND 52.39 03/26/10 ND 44.70 ND 56.03 MW-10 100.73 MW-8 (cont)932.49 MW-9 101.19 939.90 Page 8 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 06/03/10 ND 43.78 ND 56.95 12/17/10 ND 43.82 ND 56.91 Pre-MMPE (07/11/11) ND 44.18 ND 56.55 Post-MMPE (07/15/11) ND 44.20 ND 56.53 08/16/11 ND 44.26 ND 56.47 Pre-MMPE (01/16/12) ND 45.29 ND 55.44 Post-MMPE (01/20/12) ND 45.17 ND 55.56 02/20/12 ND 45.30 ND 55.43 06/19/12 ND 45.88 ND 54.85 Pre-MMPE (01/14/13) ND 46.02 ND 54.71 Post-MMPE (01/18/13) ND 46.18 ND 54.55 02/20/13 ND 46.05 ND 54.68 Pre-MMPE (07/29/13) ND 44.11 ND 56.62 Post-MMPE (08/02/13) ND 44.03 ND 56.70 09/05/13 ND 43.38 ND 57.35 04/24/14 ND 41.91 ND 897.54 06/07/16 ND 41.35 ND 898.10 05/15/17 ND 42.44 ND 897.01 01/23/18 ND 41.34 ND 898.11 07/10/18 ND 41.18 ND 898.27 01/07/19 ND 39.01 ND 900.44 07/16/19 ND 36.54 ND 902.91 01/09/20 ND 38.25 ND 901.20 07/16/20 ND 36.21 ND 903.24 01/12/21 ND 34.62 ND 904.83 07/13/21 ND 34.38 ND 905.07 01/19/22 ND 37.81 ND 901.64 07/20/22 ND 38.82 ND 900.63 11/07/03 44.82 44.90 0.08 55.20 11/08/05 ND 45.62 ND 54.41 12/12/06 ND 47.73 ND 52.30 06/19/07 ND 46.58 ND 53.45 09/11/08 ND 49.23 ND 50.80 05/18/09 ND 48.26 ND 51.77 03/26/10 ND 44.82 ND 55.21 06/03/10 ND 44.00 ND 56.03 12/17/10 ND 44.19 ND 55.84 Pre-MMPE (07/11/11) ND 44.67 ND 55.36 Post-MMPE (07/15/11) ND 44.76 ND 55.27 08/16/11 ND 44.86 ND 55.17 Pre-MMPE (01/16/12) ND 45.86 ND 54.17 Post-MMPE (01/20/12) ND 45.79 ND 54.24 02/20/12 ND 45.88 ND 54.15 06/19/12 ND 45.94 ND 54.09 Pre-MMPE (01/14/13) ND 46.58 ND 53.45 Post-MMPE (01/18/13) ND 46.83 ND 53.20 02/20/13 ND 46.60 ND 53.43 100.73 MW-10 (cont) 100.03MW-11 939.45 Page 9 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 Pre-MMPE (07/29/13) ND 44.84 ND 55.19 Post-MMPE (08/02/13) ND 44.82 ND 55.21 09/05/13 ND 44.19 ND 55.84 04/24/14 ND 42.72 ND 896.30 06/07/16 ND 42.19 ND 896.83 05/15/17 ND 43.55 ND 895.47 01/23/18 ND 42.44 ND 896.58 07/10/18 01/07/19 ND 41.38 ND 897.64 07/16/19 ND 39.10 ND 899.92 01/09/20 ND 41.33 ND 897.69 07/16/20 ND 39.76 ND 899.26 01/12/21 ND 35.85 ND 903.17 07/13/21 ND 35.81 ND 903.21 01/19/22 ND 38.53 ND 900.49 07/20/22 ND 39.01 ND 900.01 11/07/03 44.69 44.73 0.04 55.30 11/08/05 ND 44.73 ND 55.27 12/12/06 ND 46.56 ND 53.44 06/19/07 ND 45.94 ND 54.06 09/11/08 ND 49.10 ND 50.90 05/18/09 ND 48.15 ND 51.85 03/26/10 ND 44.73 ND 55.27 06/03/10 ND 43.89 ND 56.11 12/17/10 ND 44.09 ND 55.91 Pre-MMPE (07/11/11) ND 44.58 ND 55.42 Post-MMPE (07/15/11) ND 44.71 ND 55.29 08/16/11 ND 44.78 ND 55.22 Pre-MMPE (01/16/12) ND 45.79 ND 54.21 Post-MMPE (01/20/12) ND 45.73 ND 54.27 02/20/12 ND 45.83 ND 54.17 06/19/12 ND 45.86 ND 54.14 Pre-MMPE (01/14/13) ND 46.51 ND 53.49 Post-MMPE (01/18/13) ND 46.80 ND 53.20 02/20/13 ND 46.54 ND 53.46 Pre-MMPE (07/29/13) ND 44.69 ND 55.31 Post-MMPE (08/02/13) ND 44.72 ND 55.28 09/05/13 ND 44.04 ND 55.96 04/24/14 ND 42.60 ND 896.21 06/07/16 ND 41.98 ND 896.83 05/15/17 ND 43.28 ND 895.53 01/23/18 ND 42.01 ND 896.80 07/10/18 01/07/19 ND 41.53 ND 897.28 07/16/19 ND 39.36 ND 899.45 01/09/20 ND 42.35 ND 896.46 07/16/20 ND 41.22 ND 897.59 100.03 MW-11 (cont) 939.02 Obstructed by mud at 48.30 ft Obstructed by mud at 43.55 ft 100.00 938.81 MW-12 Page 10 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 01/12/21 ND 35.51 ND 903.30 07/13/21 ND 35.44 ND 903.37 01/19/22 ND 38.16 ND 900.65 07/20/22 ND 38.90 ND 899.91 11/07/03 45.08 45.13 0.05 55.25 11/08/05 ND 45.97 ND 54.37 12/12/06 ND 47.02 ND 53.32 06/19/07 ND 46.40 ND 53.94 09/11/08 ND 46.94 ND 53.40 05/18/09 ND 48.59 ND 51.75 03/26/10 ND 45.16 ND 55.18 06/03/10 ND 44.32 ND 56.02 12/17/10 ND 44.53 ND 55.81 Pre-MMPE (07/11/11) ND 45.04 ND 55.30 Post-MMPE (07/15/11) ND 45.14 ND 55.20 08/16/11 ND 45.24 ND 55.10 Pre-MMPE (01/16/12) ND 46.24 ND 54.10 Post-MMPE (01/20/12) ND 46.20 ND 54.14 02/20/12 ND 46.27 ND 54.07 06/19/12 ND 46.31 ND 54.03 Pre-MMPE (01/14/13) ND 46.96 ND 53.38 Post-MMPE (01/18/13) ND 47.26 ND 53.08 02/20/13 ND 46.98 ND 53.36 Pre-MMPE (07/29/13) NM NM NM NM Post-MMPE (08/02/13) NM NM NM NM 09/05/13 ND 44.37 ND 55.97 04/24/14 ND 42.90 ND 896.14 06/07/16 ND 42.34 ND 896.70 05/15/17 ND 43.74 ND 895.30 01/23/18 ND 42.50 ND 896.54 07/10/18 01/07/19 ND 41.36 ND 897.68 07/16/19 ND 39.52 ND 899.52 01/09/20 ND 41.43 ND 897.61 07/16/20 ND 39.89 ND 899.15 01/12/21 ND 35.87 ND 903.17 07/13/21 ND 35.72 ND 903.32 01/19/22 ND 38.30 ND 900.74 07/20/22 ND 39.02 ND 900.02 11/07/03 44.89 44.95 0.06 55.80 11/08/05 ND 45.78 ND 54.92 12/12/06 ND 47.05 ND 53.65 06/19/07 NM NM NM NM 09/11/08 ND 49.53 ND 51.17 05/18/09 ND 48.68 ND 52.02 03/26/10 ND 45.23 ND 55.47 Obstructed by mud at 50.35 ft 938.81 939.04 MW-12 (cont) MW-13 100.34 100.70MW-14 Page 11 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 06/03/10 ND 44.39 ND 56.31 12/17/10 ND 44.51 ND 56.19 Pre-MMPE (07/11/11) ND 45.18 ND 55.52 Post-MMPE (07/15/11) ND 44.59 ND 56.11 08/16/11 ND 45.39 ND 55.31 Pre-MMPE (01/16/12) ND 46.36 ND 54.34 Post-MMPE (01/20/12) ND 46.83 ND 53.87 02/20/12 ND 46.43 ND 54.27 06/19/12 ND 46.51 ND 54.19 Pre-MMPE (01/14/13) ND 47.07 ND 53.63 Post-MMPE (01/18/13) ND 47.96 ND 52.74 02/20/13 ND 47.13 ND 53.57 Pre-MMPE (07/29/13) ND 45.32 ND 55.38 Post-MMPE (08/02/13) ND 46.13 ND 54.57 09/05/13 ND 44.60 ND 56.10 04/24/14 ND 43.01 ND 896.39 06/07/16 ND 42.52 ND 896.88 05/15/17 ND 44.15 ND 895.25 01/23/18 ND 42.50 ND 896.90 07/10/18 ND 54.71 ND 884.69 08/14/18 ND 42.72 ND 896.68 01/07/19 ND 41.32 ND 898.08 07/16/19 ND 40.82 ND 898.58 01/09/20 ND 42.74 ND 896.66 07/16/20 ND 41.51 ND 897.89 01/12/21 ND 36.01 ND 903.39 07/13/21 ND 36.06 ND 903.34 01/19/22 ND 38.64 ND 900.76 03/21/22 ND 39.52 ND 899.88 07/20/22 ND 39.76 ND 899.64 12/17/10 ND 42.32 ND 56.73 Pre-MMPE (07/11/11) ND 42.96 ND 56.09 Post-MMPE (07/15/11) ND 44.59 ND 54.46 08/16/11 ND 43.16 ND 55.89 Pre-MMPE (01/16/12) ND 44.15 ND 54.90 Post-MMPE (01/20/12) ND 45.48 ND 53.57 02/20/12 ND 44.26 ND 54.79 06/19/12 ND 44.34 ND 54.71 Pre-MMPE (01/14/13) ND 44.89 ND 54.16 Post-MMPE (01/18/13) ND 46.53 ND 52.52 02/20/13 ND 45.04 ND 54.01 Pre-MMPE (07/29/13) ND 43.24 ND 55.81 Post-MMPE (08/02/13) ND 44.80 ND 54.25 09/05/13 ND 42.57 ND 56.48 11/25/13 ND 41.79 ND 895.95 12/03/13 ND 41.62 ND 896.12 12/04/13 ND 41.39 ND 896.35 MW-15 99.05 939.40 MW-14 (cont) 100.70 937.74 Page 12 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 04/24/14 ND 41.01 ND 896.73 06/07/16 ND 40.37 ND 897.37 05/15/17 ND 41.81 ND 895.93 01/23/18 ND 40.45 ND 897.29 07/10/18 ND 47.84 ND 889.88 01/07/19 ND 38.69 ND 899.03 07/16/19 ND 37.20 ND 900.52 01/09/20 ND 38.25 ND 899.47 07/16/20 ND 29.85 ND 907.87 01/12/21 ND 34.04 ND 903.68 07/13/21 ND 34.21 ND 903.51 01/19/22 ND 36.46 ND 901.26 07/20/22 ND 37.43 ND 900.29 Pre-MMPE (01/14/13) ND 45.90 ND NS Post-MMPE (01/18/13) ND 46.16 ND NS 02/20/13 ND 45.98 ND NS Pre-MMPE (07/29/13) ND 44.14 ND NS Post-MMPE (08/02/13) ND 44.20 ND NS 09/05/13 ND 43.47 ND NS 04/24/14 ND 41.92 ND 895.68 06/07/16 ND 41.35 ND 896.25 05/15/17 ND 42.99 ND 894.61 01/23/18 ND 41.70 ND 895.90 07/10/18 ND 55.73 ND 881.85 08/14/18 ND 41.74 ND 895.84 01/07/19 ND 40.94 ND 896.64 07/16/19 ND 39.34 ND 898.24 01/09/20 ND 41.50 ND 896.08 07/16/20 ND 38.90 ND 898.68 01/12/21 ND 35.11 ND 902.47 07/13/21 ND 34.93 ND 902.65 01/19/22 ND 37.91 ND 899.67 07/20/22 ND 38.82 ND 898.76 Pre-MMPE (01/14/13) ND 44.67 ND NS Post-MMPE (01/18/13) ND 44.98 ND NS 02/20/13 ND 44.64 ND NS Pre-MMPE (07/29/13) ND 42.54 ND NS Post-MMPE (08/02/13) ND 42.62 ND NS 09/05/13 ND 41.84 ND NS 04/24/14 ND 40.44 ND 895.85 06/07/16 ND 39.96 ND 896.33 05/15/17 ND 40.74 ND 895.55 01/23/18 ND 40.72 ND 895.57 07/10/18 ND 43.80 ND 892.50 01/07/19 ND 39.10 ND 897.20 07/16/19 ND 36.82 ND 899.48 NS MW-16 936.30 MW-17D 936.29 NS 937.58 937.60 937.72 937.74 MW-15 (cont) Page 13 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 01/09/20 ND 39.00 ND 897.30 07/16/20 ND 36.58 ND 899.72 01/12/21 ND 34.68 ND 901.62 07/13/21 ND 34.93 ND 901.37 01/19/22 ND 37.89 ND 898.41 07/20/22 ND 38.53 ND 897.77 11/25/13 ND 42.43 ND 895.35 12/03/13 ND 42.24 ND 895.54 12/04/13 ND 41.58 ND 896.20 04/24/14 ND 41.49 ND 896.29 06/07/16 ND 40.83 ND 896.95 05/15/17 ND 42.21 ND 895.57 01/23/18 ND 41.03 ND 896.75 07/10/18 ND 57.31 ND 880.56 01/07/19 ND 39.69 ND 898.18 07/16/19 ND 37.92 ND 899.95 01/09/20 ND 39.89 ND 897.98 07/16/20 ND 39.43 ND 898.44 01/12/21 ND 35.12 ND 902.75 07/13/21 ND 35.19 ND 902.68 01/19/22 ND 37.32 ND 900.55 07/20/22 ND 38.39 ND 899.48 11/25/13 ND 42.34 ND 895.47 12/03/13 ND 42.15 ND 895.66 12/04/13 ND 41.66 ND 896.15 04/24/14 ND 41.40 ND 896.41 06/07/16 ND 40.73 ND 897.08 05/15/17 ND 42.14 ND 895.67 01/23/18 ND 40.90 ND 896.91 07/10/18 ND 55.48 ND 882.32 01/07/19 ND 39.48 ND 898.32 07/16/19 ND 37.65 ND 900.15 01/09/20 ND 39.41 ND 898.39 07/16/20 ND 39.00 ND 898.80 01/12/21 ND 34.97 ND 902.83 07/13/21 ND 34.80 ND 903.00 01/19/22 ND 37.40 ND 900.40 07/20/22 ND 38.24 ND 899.56 05/15/17 ND 37.06 ND 893.21 01/23/18 ND 36.45 ND 893.82 07/10/18 ND 36.03 ND 894.24 01/07/19 ND 34.14 ND 896.13 07/16/19 ND 32.40 ND 897.87 01/09/20 ND 34.06 ND 896.21 07/16/20 ND 31.86 ND 898.41 MW-20 930.27 936.30MW-17D (cont) 937.78 MW-19 937.87 937.80 937.81 MW-18 Page 14 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 01/12/21 ND 30.55 ND 899.72 07/13/21 ND 30.46 ND 899.81 01/19/22 ND 33.49 ND 896.78 07/20/22 ND 34.09 ND 896.18 05/15/17 ND 36.66 ND 893.70 01/23/18 ND 36.30 ND 894.06 07/10/18 ND 36.78 ND 893.58 01/07/19 ND 33.28 ND 897.08 07/16/19 ND 31.81 ND 898.55 01/09/20 ND 33.54 ND 896.82 07/16/20 ND 31.90 ND 898.46 01/12/21 ND 30.02 ND 900.34 07/13/21 ND 29.92 ND 900.44 01/19/22 ND 32.92 ND 897.44 07/20/22 ND 33.71 ND 896.65 11/25/13 ND 43.16 ND 895.13 04/24/14 ND 42.10 ND 896.19 06/07/16 Not Gauged 05/15/17 Not Gauged 01/23/18 Not Gauged 07/10/18 Not Gauged 01/07/19 Not Gauged 07/16/19 Not Gauged 01/09/20 Not Gauged 07/16/20 Not Gauged 01/12/21 Not Gauged 07/13/21 Not Gauged 01/19/22 Not Gauged 07/20/22 Not Gauged 11/25/13 ND 42.91 ND 895.28 04/24/14 ND 41.91 ND 896.28 06/07/16 Not Gauged 05/15/17 Well Abandoned 04/24/10 DRY DRY DRY DRY 06/07/16 Not Gauged 05/15/17 Not Gauged 01/23/18 Not Gauged 07/10/18 Not Gauged 01/07/19 Not Gauged 07/16/19 Not Gauged 01/09/20 Not Gauged 07/16/20 Not Gauge MW-20 (cont)930.27 SVE-1 938.31 938.14 938.19AS-2 930.36MW-21D AS-1 938.29 Page 15 of 16 WELL DATE TOC DEPTH TO DEPTH TO LNAPL ID WATER LEVEL ELEVATION LNAPL1 WATER1 THICKNESS MEASURED (ft) (ft) (ft) (ft) (ft) Table 2 Groundwater Elevation Data Statesville, Iredell County, North Carolina Former Coastal Mart No. 443 1237 West Front Street CORRECTED GROUNDWATER ELEVATION2,3,4,6 01/12/21 Not Gauge 07/13/21 Not Gauge 01/19/22 Not Gauged 07/20/22 Not Gauged NOTES: 1. Reported in feet below ground surface. 2. Measured in feet above mean sea level. 4. Groundwater elevations were corrected by subtracting 85% of the LNAPL thickness from the depth to water. DRY - Well Gauged Dry NM - Not Measured ND - Not Detected NS - Not Surveyed TOC - Top Of Casing. MMPE - Mobile Multi-Phase Extraction LNAPL - Light Non-Aqueous Phase Liquid. SVE-1 (cont)938.31 5. On July 10, 2018, groundwater was not detected at MW-1, MW-5, MW-11, MW-12, and MW-13 due to obstruction by mud in the wells. URS Corporation is not responsible for data generated prior to 2004. Data included on this table not generated by or on behalf of URS Corporation (URS) has been taken from documents prepared and submitted to the NCDEQ by Others and is included only for ease of reference; URS does not assume or accept any responsibility or liability for the quality, accuracy, or completeness of the data included on this table that was not enerated b or on behalf of URS. 3. Site re-surveyed in December 2013 by Taylor, Wiseman, & Taylor Surveying. Monitoring wells MW-6 and MW-15 were re- surveyed in November 2013. Prior to December 2013 site re-survey, groundwater elevation was measured in feet relative to site datum. 6. On October 15, 2018, URS Corporation re-surveyed the top of casing and ground surface elevation of monitoring wells MW-1, MW-2D, MW-6, MW-15, MW-16, MW-17D, MW-18, and MW-19. Page 16 of 16 Well ID Date Temperature (oC)pH Specific Conductance (mS/cm) Dissolved Oxygen (mg/L) Oxidation Reduction Potential(mV) 1/19/2022 18.0 6.52 0.0518 2.70 NR 3/21/2022 NS NS NS NS NS 7/20/2022 22.1 5.16 0.0523 0.69 83.8 1/19/2022 16.6 7.24 0.0255 7.69 70.5 3/21/2022 NS NS NS NS NS 7/20/2022 22.3 5.84 0.3849 4.80 5.9 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 17.4 6.93 0.1342 1.84 -34.2 3/21/2022 21.7 6.45 0.1246 2.03 -82.1 7/20/2022 22.9 5.87 0.1052 0.91 5.9 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS MW-12 MW-11 Table 3 Statesville, Iredell County, North Carolina MW-1 MW-10 MW-9 January 19, 2022, March 21, 2022, and July 20, 2022 Groundwater Quality Field Parameters MW-2D MW-3 MW-4 MW-5 1237 West Front Street Former Coastal Mart No. 443 MW-6 MW-7 MW-8 MW-13 1 of 2 Well ID Date Temperature (oC)pH Specific Conductance (mS/cm) Dissolved Oxygen (mg/L) Oxidation Reduction Potential(mV) Table 3 Statesville, Iredell County, North Carolina January 19, 2022, March 21, 2022, and July 20, 2022 Groundwater Quality Field Parameters 1237 West Front Street Former Coastal Mart No. 443 1/19/2022 17.2 7.20 0.1346 1.00 -62.3 3/21/2022 20.6 6.77 0.1507 1.25 -79.1 7/20/2022 21.5 6.44 0.1632 0.93 -36.9 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 16.5 7.07 0.1970 1.55 -37.0 3/21/2022 NS NS NS NS NS 7/20/2022 21.9 5.39 0.2546 1.56 95.0 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 18.6 8.13 0.0649 2.79 7.8 3/21/2022 NS NS NS NS NS 7/20/2022 21.8 5.32 0.0521 1.33 107.9 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS 1/19/2022 NS NS NS NS NS 3/21/2022 NS NS NS NS NS 7/20/2022 NS NS NS NS NS NOTES: 1. pH measured in standard units 2. oC - degrees Celsius 3. mS/cm - millisiemens per centimeter 4. mg/L - milligrams per liter 5. mV - millivolts NR - Not Recorded NS - Not Sampled MW-21D MW-20 MW-19 MW-18 MW-17D MW-16 MW-15 MW-14 2 of 2 1 1,000 29 530 200 70 0.0004 15 420 4,200 210 210 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 5,000 257,500 29,000 87,500 200,000 70,000 50 15,000 NPS NPS NPS 15,500 9/4/2002 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 11/7/2003 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 11/9/2005 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 6/19/2007 34,900 42,900 3,040 15,700 3,890 279 46.3 45.6 132,000 27,900 10,300 NA 9/11/2008 NS NS NS NS NS NS NS NS NS NS NS NS 12/17/2010 29,300 41,400 3,580 20,290 251 NA 66.5 NA NA NA NA NA 2/20/2012 23,000 41,200 4,010 20,950 <200 NA 56.8 NA NA NA NA NA 6/19/2012 24,400 38,700 3,740 19,530 234 NA 55.3 NA NA NA NA NA 2/20/2013 20,000 33,900 3,590 20,450 180 NA 43.4 NA NA NA NA NA 4/24/2014 21,300 33,100 3,250 19,280 170 NA 47.7 NA NA NA NA 1,940 6/8/2016 20,700 37,100 3,610 19,820 291 NA 28.9 NA NA NA NA 1,750 5/16/2017 21,200 34,700 3,040 16,350 95.4 J NA 68.0 NA NA NA NA 1,180 1/23/2018 16,000 22,000 2,000 10,000 <200 NA <2001 NA NA NA NA 980 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 8/14/2018*10,000 25,000 1,600 14,000 1,100 NA <1001 NA NA NA NA 1,100 1/7/2019 5,900 15,000 1,500 18,000 1,100 NA <50 NA NA NA NA 2,000 7/16/2019 410 1,400 230 3,500 1,800 NA 14 NA NA NA NA 1,700 1/9/2020 130 350 41 1,000 2,500 NA 11 NA NA NA NA 800 7/16/2020 17 29 12 320 1,800 NA <5.0 NA NA NA NA 540 1/12/2021 24 71 13 360 550 NA <2.5 NA NA NA NA 570 7/13/2021 <0.38 7.1 <0.50 72 320 NA <0.50 NA NA NA NA 26 1/19/2022 13 22.0 4.7 76 380 NA 1.5 J NA NA NA NA 150 7/20/2022 100 250 31 370 510 NA <0.46 NA NA NA NA 1,000 9/4/2002 6,200 7,100 510 2,660 2,300 <250 4.3 <5.0 23,000 5,000 <5,000 NA 11/18/2003 7,470 8,260 758 3,690 5,300 77.0 J 6.7 NA 24,000 4,890 1,300 NA 11/9/2005 13,600 15,800 814 4,530 15,800 <500 9.2 <5.0 65,800 10,200 3,000 NA 6/19/2007 12,700 11,400 1,160 6,030 16,800 137 J 11.6 <10 57,900 9,630 2,920 NA 9/11/2008 16,000 16,000 1,400 6,400 18,000 NA 7.3 NA NA NA NA NA 12/17/2010 19,400 16,800 1,430 7,750 22,800 NA 3.1 NA NA NA NA NA 2/20/2012 17,500 16,000 1,480 7,310 21,700 NA 2.6 NA NA NA NA NA 6/19/2012 19,100 13,700 1,620 7,480 28,700 NA 1.6 NA NA NA NA NA 2/20/2013 18,900 12,700 1,530 6,760 27,100 NA 1.3 NA NA NA NA NA 4/24/2014 18,400 8,570 1,390 5,310 23,300 NA 0.88 NA NA NA NA 453 6/8/2016 19,500 9,960 1,580 5,590 20,100 NA 2.2 NA NA NA NA 419 5/16/2017 5,340 129 149 138 7,650 NA <0.020 NA NA NA NA <100 1/23/2018 17,000 5,600 1,100 2,500 13,000 NA <2001 NA NA NA NA 300 7/10/2018 <2.0 <2.0 <2.0 <20 470 NA <2.0 NA NA NA NA <2.0 1/7/2019 <5.0 <5.0 <5.0 <10 600 NA <2.5 NA NA NA NA <25 7/16/2019 <1.0 <1.0 <1.0 <10 56 NA <1.0 NA NA NA NA <1.0 1/9/2020 <0.38 <0.41 <0.50 <1.6 12 NA <0.50 NA NA NA NA <1.0 7/16/2020 <0.38 <0.41 <0.50 <1.6 1.4 NA <0.50 NA NA NA NA <1.0 1/12/2021 <0.38 <0.41 <0.50 <1.6 <0.74 NA <0.50 NA NA NA NA <1.0 7/13/2021 <0.38 <0.41 <0.50 <1.6 <0.74 NA <0.50 NA NA NA NA <1.0 1/19/2022 <0.13 <0.41 <0.50 <1.6 0.43 J NA <0.23 NA NA NA NA <1.0 7/20/2022 <0.13 <0.41 <0.50 <1.6 1.0 NA <0.23 NA NA NA NA <3.0 9/4/2002 14,000 15,000 1,100 5,600 4,400 <250 14 <5.0 31,000 <10,000 <10,000 NA 11/7/2003 9,820 7,740 1,130 5,390 1,760 <200 5.8 <5.0 23,200 6,370 1,950 NA 11/8/2005 2,810 1,650 388 1,950 165 <100 0.41 <5.0 10,500 4,100 1,690 NA 6/20/2007 4,940 494 642 2,980 482 <25 1.0 <10 11,400 4,840 1,570 NA 9/11/2008 7,800 810 900 4,200 1,000 NA 1.9 NA NA NA NA NA 12/17/2010 3,790 46 358 2,145 469 NA 0.8 NA NA NA NA NA 2/20/2012 2,100 28.4 193 1,228 474 NA 0.49 NA NA NA NA NA 6/19/2012 4,600 54.3 367 2,303 876 NA 0.85 NA NA NA NA NA 2/20/2013 3,590 42.6 292 2,057 813 NA 0.71 NA NA NA NA NA 4/24/2014 691 9.5 41.5 322.8 342 NA 0.068 NA NA NA NA <10.0 6/8/2016 9.3 <0.50 <0.50 4.5 138 NA 0.039 NA NA NA NA <2.0 5/15/2017 263.0 1.8 3.4 102.3 299 NA <0.020 NA NA NA NA 3.1 J 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 4,400 3,300 420 2,500 1,100 NA <50 NA NA NA NA 76.0 1/8/2019 38 5.5 <5.0 <10 780 NA <2.5 NA NA NA NA <25 7/16/2019 <1.0 <1.0 <1.0 <10 200 NA <1.0 NA NA NA NA <1.0 Table 4 Groundwater Analytical Results Former Coastal Mart No. 443 1237 West Front Street Ali p h a t i c s C5 - C 8 * DA T E S A M P L E D SA M P L E I D ED B Statesville, Iredell County, North Carolina TO L U E N E Ar o m a t i c s C9 - C 1 0 * LE A D ET H Y L B E N Z E N E Units XY L E N E S MT B E BE N Z E N E MW-3 Ali p h a t i c s C9 - C 1 2 * Na p h t h a l e n e MW-1 MW-2D 2L Standard GCL Standard IP E Page 1 of 6 1 1,000 29 530 200 70 0.0004 15 420 4,200 210 210 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 5,000 257,500 29,000 87,500 200,000 70,000 50 15,000 NPS NPS NPS 15,500 Table 4 Groundwater Analytical Results Former Coastal Mart No. 443 1237 West Front Street Ali p h a t i c s C5 - C 8 * DA T E S A M P L E D SA M P L E I D ED B Statesville, Iredell County, North Carolina TO L U E N E Ar o m a t i c s C9 - C 1 0 * LE A D ET H Y L B E N Z E N E Units XY L E N E S MT B E BE N Z E N E Ali p h a t i c s C9 - C 1 2 * Na p h t h a l e n e 2L Standard GCL Standard IP E 9/4/2002 32 <5.0 2.2 3.1 <5.0 <5.0 <0.010 <5.0 420 <100 210 NA 11/7/2003 66.1 4.0 6.9 16.6 <2.0 <2.0 <0.018 5.7 778 <55 <20 NA 11/8/2005 70.9 0.59 <1.0 5.8 <1.0 <1.0 <0.019 <5.0 288 <55 16.6 NA 6/20/2007 66.1 <0.50 <0.50 14.9 <0.50 <0.50 <0.0094 <10 449 <30 11.4 J NA 9/11/2008 140 <10 <2.0 40 <4.0 NA <0.020 NA NA NA NA NA 12/17/2010 150 <0.50 0.9 17.3 0.58 NA <0.019 NA NA NA NA NA 2/20/2012 73.0 <0.50 <0.50 8.4 <0.50 NA <0.020 NA NA NA NA NA 6/19/2012 129.0 <0.50 <0.50 14.3 <0.50 NA <0.019 NA NA NA NA NA 2/20/2013 154.0 0.36 J 0.25 J 23.6 <0.50 NA <0.020 NA NA NA NA NA 4/24/2014 6.2 <0.50 <0.50 1.6 <0.50 NA <0.020 NA NA NA NA <2.0 6/8/2016 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 5/15/2017 7.3 <0.50 <0.50 3.89 <0.50 NA <0.020 NA NA NA NA <2.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 8/14/2018* <1.0 <1.0 <1.0 <10 <1.0 NA <1.0 NA NA NA NA <1.0 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 <1.0 <1.0 <1.0 <10 <1.0 NA <1.0 NA NA NA NA <1.0 9/4/2002 1,700 1,500 110 330 <25 <25 <0.010 <5.0 6,200 570 110 NA 11/7/2003 5,660 7,120 523 3,060 <200 <200 0.044 <5.0 20,000 3,390 821 NA 11/8/2005 6,270 7,740 492 2,810 <200 <200 0.085 <5.0 25,700 4,590 1,210 NA 6/19/2007 (DUP) 3,740 4,610 359 2,070 <100 <100 NA NA NA NA NA NA 6/19/2007 4,120 4,690 361 2,160 <25 <25 0.11 15.5 14,100 2,830 865 NA 9/11/2008 (DUP) 1,900 880 190 1,100 <20 NA <0.020 NA NA NA NA NA 9/11/2008 2,000 900 180 920 <40 NA <0.020 NA NA NA NA NA 12/17/2010 1,710 746 170 1,356 102 NA <0.020 NA NA NA NA NA 12/17/2010 (DUP) 1,520 701 148 1,230 84.3 NA <0.019 NA NA NA NA NA 2/20/2012 665 117 177 947 52.7 NA <0.020 NA NA NA NA NA 6/19/2012 295 34 221 981 49.8 NA <0.020 NA NA NA NA NA 2/20/2013 138 10.2 233 597 45 NA <0.020 NA NA NA NA NA 4/24/2014 50.7 11.6 15.5 47.3 115 NA <0.020 NA NA NA NA <2.0 6/8/2016 15.8 6.2 7.5 30.5 137 NA <0.020 NA NA NA NA <2.0 5/16/2017 22.3 6.7 13.1 46.7 155 NA <0.020 NA NA NA NA <2.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/8/2019 <1.0 <1.0 <1.0 <2.0 21 NA <0.50 NA NA NA NA <5.0 7/16/2019 <1.0 <1.0 <1.0 <10 10 NA <1.0 NA NA NA NA <1.0 11/7/2003 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 11/8/2005 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 6/19/2007 27,800 31,900 2,790 13,800 6,740 221 60.9 34.1 108,000 22,200 7,190 NA 9/11/2008 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 12/17/2010 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 2/20/2012 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 6/19/2012 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 2/20/2013 20,500 25,300 1,820 10,650 3,400 NA 49.6 NA NA NA NA NA 11/25/2013 15,600 20,800 2,160 13,210 2,860 NA 75.6 NA NA NA NA 1,610 12/9/2013 22,900 31,600 3,260 18,200 3,190 NA 69.9 NA NA NA NA 1,440 4/24/2014 25,100 30,000 3,050 16,840 3,100 NA 74.3 NA NA NA NA 1,340 6/8/2016 20,700 31,600 3,220 17,970 1,950 NA 21.9 NA NA NA NA 1,530 5/16/2017 22,400 32,200 2,880 15,590 1,760 NA 81.0 NA NA NA NA 1,150 1/23/2018 20,000 32,000 2,400 14,000 1,900 NA <1001 NA NA NA NA 870 1/23/2018 (DUP)19,000 29,000 2,300 13,000 1,400 NA <2001 NA NA NA NA 710 7/10/2018 16,000 21,000 1,300 7,000 2,500 NA <2001 NA NA NA NA 730 7/10/2018 (DUP)15,000 20,000 1,300 6,800 2,400 NA <2001 NA NA NA NA 570 1/7/2019 19,000 30,000 2,100 11,000 1,900 NA 76 NA NA NA NA 850 1/7/2019 (DUP)18,000 29,000 2,000 11,000 1,800 NA 77 NA NA NA NA 810 7/16/2019 7,100 8,700 690 4,000 1,100 NA <50 NA NA NA NA 270 7/16/2019 (DUP)6,500 7,900 610 3,500 1,000 NA <50 NA NA NA NA 240 1/9/2020 7,400 9,800 630 3,700 1,000 NA 32J NA NA NA NA 260 1/9/2020(DUP)8,900 11,000 790 4,600 1,000 NA 30 NA NA NA NA 340 7/16/2020 13,000 20,000 2,100 12,000 1,100 NA <50 NA NA NA NA 1,100 7/16/2020(DUP)11,000 19,000 2,100 12,000 1,000 NA <50 NA NA NA NA 900 10/21/2020 3,800 6,000 520 3,300 1,100 NA <25 NA NA NA NA 200 MW-4 MW-6 MW-5 Page 2 of 6 1 1,000 29 530 200 70 0.0004 15 420 4,200 210 210 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 5,000 257,500 29,000 87,500 200,000 70,000 50 15,000 NPS NPS NPS 15,500 Table 4 Groundwater Analytical Results Former Coastal Mart No. 443 1237 West Front Street Ali p h a t i c s C5 - C 8 * DA T E S A M P L E D SA M P L E I D ED B Statesville, Iredell County, North Carolina TO L U E N E Ar o m a t i c s C9 - C 1 0 * LE A D ET H Y L B E N Z E N E Units XY L E N E S MT B E BE N Z E N E Ali p h a t i c s C9 - C 1 2 * Na p h t h a l e n e 2L Standard GCL Standard IP E 1/12/2021 2,900 4,600 380 2,300 580 NA <5.0 NA NA NA NA 170 1/12/2021 (DUP) 2,800 4,600 380 2,300 580 NA <5.0 NA NA NA NA 170 4/15/2021 2,300 2,800 210 1,300 520 NA <13 NA NA NA NA 120 7/13/2021 860 1,400 87 660 510 NA 4.1 J NA NA NA NA 40 7/13/2021 (DUP) 660 1,000 62 480 480 NA 3.5 J NA NA NA NA 35 1/19/2022 6,300 9,900 700 3,900 590 NA <23 NA NA NA NA 230 1/19/2022 (DUP)5,500 8,800 640 3,500 520 NA <23 NA NA NA NA 230 3/21/2022 6,300 8,700 650 3,200 610 NA <23 NA NA NA NA 340 3/21/2022 (DUP)6,100 8,700 650 3,200 630 NA <23 NA NA NA NA 320 7/20/2022 14,000 22,000 1,700 9,100 1,000 NA 50 J NA NA NA NA 600 7/20/2022 (DUP)13,000 21,000 1,600 8,400 950 NA 52 J NA NA NA NA 520 11/7/2003 2.4 7.8 <2.0 1.7 J <2.0 <2.0 0.019 <5.0 82.4 <55 <20 NA 11/8/2005 <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 <0.019 <5.0 <75.0 <55.0 <20.0 NA 6/19/2007 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.0095 44.8 <50 <30 <10 NA 9/11/2008 <1.0 <5.0 <1.0 <2.0 <2.0 NA <0.020 NA NA NA NA NA 12/17/2010 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.019 NA NA NA NA NA 2/20/2012 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA NA 6/19/2012 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA NA 2/20/2013 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.021 NA NA NA NA NA 4/24/2014 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 6/8/2016 <0.50 0.99 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 5/16/2017 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 <1.0 <1.0 <1.0 <10 <1.0 NA <1.0 NA NA NA NA <1.0 11/7/2003 20.6 <2.0 1.5 J 3.4 J <2.0 <2.0 <0.018 <5.0 333 <55 <20 NA 11/8/2005 <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 <0.019 <5.0 <75.0 <55.0 <20 NA 6/20/2007 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.0096 16.8 <50 <30 <10 NA 9/11/2008 <1.0 <5.0 <1.0 <21.0 <2.0 NA <0.020 NA NA NA NA NA 12/17/2010 NS NS NS NS NS NS NS NS NS NS NS NS 2/20/2012 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA NA 6/19/2012 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA NA 2/20/2013 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.019 NA NA NA NA NA 4/24/2014 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 6/8/2016 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 5/15/2017 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 8/14/2018* <1.0 <1.0 <1.0 <10 <1.0 NA <1.0 NA NA NA NA <1.0 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 <1.0 <1.0 <1.0 <10 <1.0 NA <1.0 NA NA NA NA <1.0 11/7/2003 87.9 85.9 35.8 110 <2.0 35.3 1.7 <5.0 547 585 318 NA 11/9/2005 372 175 163 463 <10 141 7.8 <5.0 2,010 1,970 1,150 NA 6/19/2007 271 110 153 349 <2.5 144 8.6 12.9 1,890 2,230 1,340 NA 9/11/2008 67 19 44 120 <4.0 NA 3.4 NA NA NA NA NA 12/17/2010 143 57 259 404 <2.5 NA 12.1 NA NA NA NA NA 2/20/2012 76.0 33.6 69.9 237 <1.2 NA 5.8 NA NA NA NA NA 6/19/2012 74.3 35.1 94 247.3 <1.0 NA 4 NA NA NA NA NA 2/20/2013 42.4 22.1 41 172 <1.0 NA 0.91 NA NA NA NA NA 4/24/2014 188 158 832 852.5 <2.5 NA 3.0 NA NA NA NA 956 6/8/2016 21.2 21.0 14.2 128.4 <0.50 NA 0.18 NA NA NA NA 156 5/16/2017 15.7 1.0 10.6 6.6 <0.50 NA 0.062 NA NA NA NA 133 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 4.2 1.3 3.4 <10 <1.0 NA <1.0 NA NA NA NA 39 11/7/2003 5.1 15.9 1.3 J 6.0 <2.0 <2.0 0.043 <5.0 <75 <55 <20 NA 11/9/2005 <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 <0.019 <5.0 <75.0 <55.0 <20 NA 6/19/2007 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.0091 75.3 <50 <30 <10 NA MW-9 MW-6 (cont) MW-10 MW-7 MW-8 Page 3 of 6 1 1,000 29 530 200 70 0.0004 15 420 4,200 210 210 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 5,000 257,500 29,000 87,500 200,000 70,000 50 15,000 NPS NPS NPS 15,500 Table 4 Groundwater Analytical Results Former Coastal Mart No. 443 1237 West Front Street Ali p h a t i c s C5 - C 8 * DA T E S A M P L E D SA M P L E I D ED B Statesville, Iredell County, North Carolina TO L U E N E Ar o m a t i c s C9 - C 1 0 * LE A D ET H Y L B E N Z E N E Units XY L E N E S MT B E BE N Z E N E Ali p h a t i c s C9 - C 1 2 * Na p h t h a l e n e 2L Standard GCL Standard IP E 9/11/2008 <1.0 <5.0 <1.0 <2.0 <2.0 NA <0.020 NA NA NA NA NA 12/17/2010 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA NA 2/20/2012 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA NA 6/19/2012 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA NA 2/20/2013 <0.50 0.38 J <0.50 2.58 <0.50 NA <0.020 NA NA NA NA NA 4/24/2014 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA 2.6 6/8/2016 <0.50 0.87 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 5/16/2017 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 <1.0 <1.0 <1.0 <10 <1.0 NA <1.0 NA NA NA NA <1.0 11/7/2003 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 11/8/2005 339 51.9 <10 85 <10.0 <10.0 <0.019 <5.0 1,650 144 33.6 NA 6/19/2007 340 47.5 <5.0 113 <5.0 <5.0 <0.0096 14.7 2,000 147 29.7 NA 9/11/2008 610 79.0 5.2 170 <10 NA <0.020 NA NA NA NA NA 12/17/2010 571 47.4 5.2 281.4 0.56 NA <0.019 NA NA NA NA NA 2/20/2012 417 22.9 4.3 164.1 <2.5 NA <0.020 NA NA NA NA NA 6/19/2012 708 35.5 7.9 295.3 <1.2 NA <0.019 NA NA NA NA NA 2/20/2013 690 40.8 8.4 294.3 <2.5 NA <0.020 NA NA NA NA NA 4/24/2014 323 10.1 3.2 104.2 3.5 NA <0.020 NA NA NA NA <4.0 6/8/2016 330 10.5 3.3 126.1 5.6 NA <0.019 NA NA NA NA <5.0 5/16/2017 305 14.4 3.5 111.3 6.7 NA <0.020 NA NA NA NA <5.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/8/2019 <1.0 <1.0 <1.0 2.2 10 NA <0.50 NA NA NA NA <5.0 7/16/2019 1.5 <1.0 <1.0 <10 21 NA <1.0 NA NA NA NA <1.0 11/7/2003 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 11/9/2005 12,600 15,200 818 4,570 745 <500 7 <5.0 49,600 9,000 2,620 NA 6/19/2007 11,500 14,700 1,050 5,850 1,150 <250 9.40 32.3 41,200 7,020 2,580 NA 9/11/2008 12,000 12,000 1,000 5,800 330 NA 2.50 NA NA NA NA NA 12/17/2010 10,300 4,800 889 6,650 2,100 NA 7.90 NA NA NA NA NA 2/20/2012 9,160 4,570 889 5,080 1,160 NA 1.40 NA NA NA NA NA 6/19/2012 11,100 5,170 1,050 6,100 1,290 NA 0.72 NA NA NA NA NA 2/20/2013 10,500 4,720 1,030 6,120 1,170 NA 0.55 NA NA NA NA NA 4/24/2014 113 1.4 12.3 63.1 123 NA 0.18 NA NA NA NA <2.0 6/8/2016 150 14.3 141 150.7 971 NA <0.020 NA NA NA NA 21.2 5/16/2017 124 3.8 J 98 110.2 1130 NA <0.020 NA NA NA NA 24.6 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/8/2019 <1.0 <1.0 <1.0 <2.0 360 NA <0.50 NA NA NA NA <5.0 7/16/2019 3.9 1.0 <1.0 <10 150 NA <1.0 NA NA NA NA <1.0 11/7/2003 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 11/9/2005 7,670 9,170 582 3,340 143 <200 1.1 <5.0 27,000 4,960 1,250 NA 6/19/2007 5,070 3,530 484 2,710 145 J <100 0.39 110 13,500 3,690 919 NA 9/11/2008 4,100 2,900 410 2,600 49 NA 0.24 NA NA NA NA NA 12/17/2010 1,790 224 224 1,144 367 NA 0.73 NA NA NA NA NA 2/20/2012 811 10.8 152 621 210 NA 0.17 NA NA NA NA NA 6/19/2012 555 5.9 136 492 263 NA 0.11 NA NA NA NA NA 2/20/2013 145 0.65 J 41 129 97.1 NA <0.020 NA NA NA NA NA 4/24/2014 23.8 2.2 1.9 11.5 759 NA 0.18 NA NA NA NA <2.0 6/8/2016 7.2 <2.5 <2.5 6.9 714 NA 0.43 NA NA NA NA <10.0 5/16/2017 16.6 2.3 J <2.5 26.0 850 NA 0.10 NA NA NA NA <10.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/8/2019 <1.0 <1.0 <1.0 <2.0 590 NA <0.50 NA NA NA NA <5.0 7/16/2019 <1.0 <1.0 <1.0 <10 180 NA <1.0 NA NA NA NA <1.0 11/7/2003 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL 11/9/2005 29,300 35,900 1,910 10,700 <1000 <1000 117 43.1 106,000 21,100 5,960 NA 6/19/2007 NS NS NS NS NS NS NS NS NS NS NS NS MW-11 MW-12 MW-10 (cont) MW-13 MW-14 Page 4 of 6 1 1,000 29 530 200 70 0.0004 15 420 4,200 210 210 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 5,000 257,500 29,000 87,500 200,000 70,000 50 15,000 NPS NPS NPS 15,500 Table 4 Groundwater Analytical Results Former Coastal Mart No. 443 1237 West Front Street Ali p h a t i c s C5 - C 8 * DA T E S A M P L E D SA M P L E I D ED B Statesville, Iredell County, North Carolina TO L U E N E Ar o m a t i c s C9 - C 1 0 * LE A D ET H Y L B E N Z E N E Units XY L E N E S MT B E BE N Z E N E Ali p h a t i c s C9 - C 1 2 * Na p h t h a l e n e 2L Standard GCL Standard IP E 9/11/2008 31,000 35,000 2,500 14,000 830 NA 220 NA NA NA NA NA 12/17/2010 21,100 34,600 2,700 19,680 1090 NA 158 NA NA NA NA NA 2/20/2012 (DUP)16,200 24,400 1,250 7,460 763 NA 122 NA NA NA NA NA 2/20/2012 17,600 26,000 1,640 9,610 867 NA 137 NA NA NA NA NA 6/19/2012 23,800 33,100 2,290 13,300 967 NA 123 NA NA NA NA NA 2/20/2013 25,100 35,500 2,010 10,640 974 NA <4.0 NA NA NA NA NA 4/24/2014 (DUP)16,700 31,900 2,470 14,060 2,500 NA 61.9 NA NA NA NA 850 4/24/2014 13,700 26,600 2,080 11,990 2,390 NA 56.7 NA NA NA NA 820 6/8/2016 (DUP)9,740 24,100 2,220 13,620 811 NA 28.8 NA NA NA NA 987 6/8/2016 9,830 23,400 2,200 13,690 873 NA 35.8 NA NA NA NA 949 5/16/2017 12,100 27,900 2,520 15,120 871 NA 42.9 NA NA NA NA 1,070 1/23/2018 9,600 23,000 2,000 13,000 450 NA <1001 NA NA NA NA 760 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 8/14/2018* 1,500 1,900 220 1,300 140 NA <10 NA NA NA NA 61 1/7/2019 1,000 1,400 300 1,900 230 NA <5.0 NA NA NA NA 120 7/16/2019 400 550 220 2,100 310 NA <5.0 NA NA NA NA 160 1/9/2020 6.7 34 35 340 45 NA <1.0 NA NA NA NA 61 7/16/2020 4.2 40 77 650 82 NA <1.0 NA NA NA NA 100 1/12/2021 3.5 8.1 15 52 120 NA <0.50 NA NA NA NA 53 7/13/2021 3.2 4.2 9.3 49 130 NA <0.50 NA NA NA NA 46 1/19/2022 28 56 93 530 350 NA <1.2 NA NA NA NA 1,100 3/21/2022 26 72 90 540 300 NA <1.2 NA NA NA NA 1,000 7/20/2022 29 110 190 1,100 440 NA <1.2 NA NA NA NA 2,100 12/17/2010 1,050 889 56 280 1.5 <2.0 <0.019 NA NA NA NA NA 2/20/2012 764 558 44.0 207.9 <5.0 NA <0.020 NA NA NA NA NA 6/19/2012 (DUP) 1,070 759 61.3 323.1 <5.0 NA <0.020 NA NA NA NA NA 6/19/2012 1,020 779 64.5 338.5 <2.5 NA <0.020 NA NA NA NA NA 2/20/2013 (DUP) 953 335 51.9 265.4 <2.5 NA <0.020 NA NA NA NA NA 2/20/2013 935 346 52.2 265.2 <5.0 NA <0.020 NA NA NA NA NA 11/25/2013 832 820 82.7 411 <2.5 NA <0.020 NA NA NA NA <10.0 12/9/2013 954 544 78 331 6.3 NA <0.020 NA NA NA NA <5.0 4/24/2014 941 1,080 95 482 10 NA <0.020 NA NA NA NA <10.0 6/8/2016 369 172 44.4 231.0 10.4 NA <0.020 NA NA NA NA <5.0 5/16/2017 (DUP) 617 209 49.5 314.6 7.2 NA <0.020 NA NA NA NA <10.0 5/16/2017 554 302 57.9 324.1 9.5 NA <0.020 NA NA NA NA <8.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 41 13 2.3 <10 2.1 NA <1.0 NA NA NA NA <1.0 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 8.0 4.5 1.7 <10 11 NA <1.0 NA NA NA NA <1.0 2/20/2013 9,390 2,970 438 3,165 3,880 NA 45.3 NA NA NA NA NA 4/24/2014 10,400 4,030 492 3,243 7,650 NA 70.3 NA NA NA NA <200 6/8/2016 12,900 4,160 676 4,220 6610 NA 27.4 NA NA NA NA 236 5/16/2017 11,700 3,120 697 4,020 6890 NA 27.0 NA NA NA NA 227 1/23/2018 3,900 <50 <50 <500 2700 NA <50 NA NA NA NA <50 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 8/14/2018* 15 7.7 <5.0 <50 3,500 NA <5 NA NA NA NA <5 1/8/2019 <20 <20 <20 <40 2,500 NA <10 NA NA NA NA <100 7/16/2019 <2.0 <2.0 <2.0 <20 480 NA <2.0 NA NA NA NA <2.0 1/9/2020 0.38J <0.41 <0.50 <1.6 120 NA <0.50 NA NA NA NA <1.0 7/16/2020 <0.38 <0.41 <0.50 <1.6 71 NA <0.50 NA NA NA NA <1.0 1/12/2021 <0.38 <0.41 <0.50 <1.6 62 NA <0.50 NA NA NA NA <1.0 7/13/2021 <0.38 <0.41 <0.50 <1.6 130 NA <0.50 NA NA NA NA <1.0 1/19/2022 1.0 J <0.82 <1.0 <3.2 380 NA <0.46 NA NA NA NA <2.0 7/20/2022 1.3 J <0.82 <1.0 <3.2 480 NA <0.46 NA NA NA NA <6.0 2/20/2013 5,570 215 95.9 314.5 7,670 NA 0.48 NA NA NA NA NA 4/24/2014 6,280 79 331 162 5,600 NA 0.17 NA NA NA NA <100 6/8/2016 5,210 34.9 129 <75.0 6,510 NA <0.020 NA NA NA NA <100 5/16/2017 3,810 32.3 38.0 <75.0 8,820 NA <0.020 NA NA NA NA <100 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 <5.0 <5.0 <5.0 <50 1,000 NA <5.0 NA NA NA NA <5.0 MW-15 MW-14 (cont) MW-16 MW-17D Page 5 of 6 1 1,000 29 530 200 70 0.0004 15 420 4,200 210 210 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 5,000 257,500 29,000 87,500 200,000 70,000 50 15,000 NPS NPS NPS 15,500 Table 4 Groundwater Analytical Results Former Coastal Mart No. 443 1237 West Front Street Ali p h a t i c s C5 - C 8 * DA T E S A M P L E D SA M P L E I D ED B Statesville, Iredell County, North Carolina TO L U E N E Ar o m a t i c s C9 - C 1 0 * LE A D ET H Y L B E N Z E N E Units XY L E N E S MT B E BE N Z E N E Ali p h a t i c s C9 - C 1 2 * Na p h t h a l e n e 2L Standard GCL Standard IP E 1/8/2019 <5.0 <5.0 <5.0 <10 860 NA <2.5 NA NA NA NA <25 7/16/2019 <1.0 <1.0 <1.0 <10 120 NA <1.0 NA NA NA NA <1.0 11/25/2013 17,900 25,800 2,060 10,060 3,760 NA 128 NA NA NA NA 603 12/9/2013 16,400 28,200 2,740 14,550 3,480 NA 90.4 NA NA NA NA 908 4/24/2014 24,600 33,600 2,910 15,490 5,420 NA 103 NA NA NA NA 861 6/8/2016 21,600 31,500 2,720 13,960 3,330 NA 61.6 NA NA NA NA 782 5/16/2017 21,200 27,000 2,410 12,410 3,600 NA 95.2 NA NA NA NA 762 1/23/2018 21,000 31,000 2,600 14,000 2,700 NA <2001 NA NA NA NA 650 7/10/2018 99 150 3.5 74 880 NA 13 NA NA NA NA 46 1/7/2019 120 390 140 920 1,400 NA 8.5 NA NA NA NA 80 7/16/2019 1.6 3.6 <1.0 <10 40 NA <1.0 NA NA NA NA 2.1 1/9/2020 0.56J <0.41 <0.50 2.6J 37 NA <0.50 NA NA NA NA <1.0 7/16/2020 <0.38 <0.41 <0.50 <1.6 4.0 NA <0.50 NA NA NA NA <1.0 1/12/2021 0.67 J 1.6 0.53 J 3.4 J 31 NA <0.50 NA NA NA NA 1.1 7/13/2021 <0.38 <0.41 <0.50 <1.6 8.1 NA <0.50 NA NA NA NA <1.0 1/19/2022 0.48 J 0.71 J <0.50 1.6 J 16.0 NA <0.23 NA NA NA NA <1.0 7/20/2022 1.1 2.4 1.6 15 27 NA <0.23 NA NA NA NA 45 11/25/2013 3,860 5,350 634 3,308 262 NA 3.3 NA NA NA NA 34.7 J 12/9/2013 4,210 5,490 464 2,394 168 NA 1.60 NA NA NA NA <50.0 4/24/2014 5,650 7,850 753 3,910 297 NA 3.2 NA NA NA NA <100 6/8/2016 4,330 6,570 650 3,347 221 NA 2.7 NA NA NA NA <100 5/15/2017 4,140 5,890 582 2,952 227 NA 2.9 NA NA NA NA 73.3 J 1/23/2018 4,400 6,800 640 3,300 310 NA <50 NA NA NA NA 74 7/10/2018 14 8.5 1.1 <10 120 NA <1.0 NA NA NA NA 1.0 1/7/2019 19 11.0 5.5 21 52 NA <0.50 NA NA NA NA <5.0 7/16/2019 <1.0 <1.0 <1.0 <10 2.4 NA <1.0 NA NA NA NA <1.0 5/15/2017 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 <1.0 <1.0 <1.0 <10 <1.0 NA <1.0 NA NA NA NA <1.0 5/15/2017 <0.50 <0.50 <0.50 <1.50 <0.50 NA <0.020 NA NA NA NA <2.0 1/23/2018 NS NS NS NS NS NS NS NS NS NS NS NS 7/10/2018 NS NS NS NS NS NS NS NS NS NS NS NS 1/7/2019 NS NS NS NS NS NS NS NS NS NS NS NS 7/16/2019 <1.0 <1.0 <1.0 <10 5.0 NA <1.0 NA NA NA NA <1.0 11/25/2013 356 732 42.1 375 9.5 NA 0.63 NA NA NA NA 8.0 J 12/9/2013 49.0 135 13.1 71.7 <1.2 NA 0.18 NA NA NA NA <5.0 11/25/2013 2,820 3,730 352 1,723 75 NA 1.4 NA NA NA NA 66 12/9/2013 1,120 1,430 135 656 <6.2 NA 0.54 NA NA NA NA 34.9 J 5/15/2017 NOTES: µg/L - micrograms per liter EDB - 1,2 dibromoethane NPS - No Published Standard NS - Not sampled IPE - di-isopropyl ether Numbers in bold and blue above GCL NA - Not analyzed for given parameter 1: Hi h re ortin limit, therefore unknown if EDB concentrations exceeded the GCL of 50 LNAPL - Light Non-Aqueous Phase Liquid MTBE - methyl-tert-butyl-ether GCL - NCDEQ Gross Contamination Level AS-2 AS-1 DRY - Well not sampled due to insufficient water J - Result is less than the reporting limit but greater than or equal to the method detection limit and the concentration is an approximate value *. Wells MW-1, MW-14, and MW-16 regauged and sampled on 8/14/2018 as they had insufficient groundwater on 7/10/2018. Their sampling on 8/14/2018 allowed to obtain concentration distribution across the Site. <: Less than the laboratory reporting limit. Well Abandoned MW-21D MW-20 MW-18 MW-19 MW-17D (cont) Page 6 of 6 Date: Type: Telemetry upgrade 5/24/2017 Change of fuses and Electrical Work 6/13/2017 AS Compressor motor upgrade 6/19/2017 System Startup/Effluent Air Sampling 6/20/2017 System Startup 6/21/2017 System Startup 6/28/2017 AS System Modifications 6/30/2017 Carbon and Purge Water sampling 7/20/2017 Reinstall SVE blower and Restart SVE 7/21/2017 System O&M 8/3/2017 System O&M 8/11/2017 System O&M/Air Sampling 8/24/2017 System O&M/Air Sampling 9/9/2017 System Shut down 9/12/2017 System Restart 9/18/2017 Air Sampling/Installation of flow meters 9/19/2017 Installation of flow meters 9/28/2017 System O&M/Air Sampling 10/5/2017 System O&M/Air Sampling 10/6/2017 System O&M 10/9/2017 System O&M/Air Sampling Remedial System Maintenance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Increased size of pipe (used a combination of 2", 3", and 4" pipes) and put a custom silencer on bleed air due to excessive noise. PRM Electrical contractor upgraded the AS compressor motor from 20 HP to 25 HP. PRM also installed new 25 HP contactor/motor starter and overload on the control panel. This allowed compressor to achieve higher injection pressures. PLC was shipped back to vendor (EOS) to enable unit to operate on cell card rather than phone line. Fidelity Electric, Inc. (Fidelity) switched the fuses in the pole mouned disconnect from 200 amp to 175 amp. On 5/22/2017, Iredell County Code Enforcement official had mentioend that the wiring from the trailer mounted disconnect to the main control panel has to be upgraded. Fidelity attempted to make this upgrade on 5/24/2017, but could not due to the size of the conduit between the trailer mounted disconnect box and the control panel. Sound level readings collected near and away from the AS/SVE system. PID readings were taken at each SVE well sampling ports. With AS/SVE system on, vacuum/pressure, dissolved oxygen, PID, and water levels were measured at the monitoring wells. Connect carbon vessels and collect system effluent PID readings. Collected system readings. SVE blower belt broke again due to high temperature (310 F) on the blower shaft/pulley; both AS/SVE system off upon departure from the site. Influent and effluent SVE air samples collected. System shut down to install new AS flow meters as the revious flow meters did not have the optimal range for accurate observations of the flow rate. One sample port installed near the influent flow meter and the other at the particulate filter. Oil changed on SVE blower and broken gauges replaced before start-up. SVE system started with all wells opened, carbon drums bypassed, and dilution air adjusted. The blower was greased. Replaced the belt on the SVE blower after it broke. Two flowmeters with broken needles on the SVE system were replaced. Collected system readings, PID readings at SVE effluent, and SVE effluent air samples. Air compressor started up; was turned off after running for 30 mins due to the loud noise caused by the narrowness of the air bleed (it is only 1" in diameter). Sound level readings collected near and away from the AS/SVE system with 3 of the shallow AS wells on at 3cfm. Collected system readings on the SVE system, greased the blower. Flow and vacuum readings collected for SVE wells. Broken flow meters for SVE-2 and SVE-3 were replaced. Vacuum gauges installed between carbon vessels on both sets of vessels. Removed some piping from sparge manifold for improved access to repair the manifold. Survey of the wells, trenches, utilities, and system completed by TWT. Collected system readings on the SVE system; flow and vacuum readings collected at SVE wells. Installed vacuum gauges between carbon vessels. Influent and effluent SVE air samples collected. Welding repair completed on AS manifold by SAEDACCO. Missing bolts on well manholes replaced and the missing 1/4" valve for the port on AS-10 replaced. 3 drums of purge water and 1 carbon vessel taken off-site by Contaminant Control, Inc. (CCI). Samples collected from the liquid phase carbon vessels. Purge water from monitoring well sampling event were also sampled. SVE system restarted The SVE blower motor was serviced by Lewis Systems, including addition of a new belt and returned to the site on 7/20/2017. AS system temporarily turned on to assess flow and influence. PID readings collected at SVE system. Pressure recorded at AS wellheads. Well cap at MW-2D replaced. Collected system readings at both AS and SVE systems. Collected SVE influent and two SVE effluent air samples (with AS component system turned on and off). Collected system readings. Supplied air to AS-7 via a portable air compressor. Air supplied to other AS wells via the AS system. Collected system readings at SVE system. SVE effluent air sample collected. Table 5 System Maintenance Description New belt placed on SVE blower and turned on for technician from Lewis Systems to evaluate the high temperature issue and breakage of belts. The blower motor was taken off-site by Lewis Systems for servicing. AS/SVE was left off. Collected system readings on the SVE system; 1st carbon vessel switched with the 2nd carbon vessel as the 1st carbon vessel had reached breakthrough. Influent and effluent SVE air samples collected. Shut down the system in preparation for Hurricane Irma Completed installing new airflow meters; fresh air intake screen cleaned; filter mat installed in the intake hood of the fresh air intake to keep leaves and debris out of the fan. Collected system readings on the SVE system. Flow and vacuum readings collected for SVE wells. Portable air compressor used to inject air into each AS well. Flow and pressure measurements taken. Collected system readings at SVE system. SVE influent and effluent air samples collected Date: Type: Remedial System Maintenance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Table 5 System Maintenance Description 10/17/2017 System O&M 10/26/2017 System O&M/Air Sampling 11/3/2017 System O&M 11/28/2017 System O&M/Air Sampling 12/14/2017 Move of CatOX 12/20/2017 System O&M/Air and Carbon Sampling 1/8/2018 Vacuum of carbon vessels 1/10/2018 Connection of CatOx 1/11/2018 Connection of CatOx 1/12/2018 Connection of CatOx 1/16/2018 Piping repairs 1/24/2018 Connection of CatOx and EOS Controller 2/12/2018 Startup of CatOx; Restart System and System O&M 2/13/2018 System O&M 2/22/2018 Restart System and System O&M 2/26/2018 System O&M 2/28/2018 Storage tank and level float switch installation 3/1/2018 System O&M 3/2/2018 System O&M 3/7/2018 AS, SVE well head inspection 3/14/2018 System O&M 3/26/2018 System O&M 4/2/2018 Electrical connection of float switch; MW inventory 4/6/2018 System O&M 4/11/2018 Removal of check valve on SVE blower effuent piping; System O&M 4/17/2018 System O&M Restart system (SVE and deep AS wells only) and collect system readings, confirm operation of system alarms related to CatOx operations. Fidelity begins wiring the CatOx breakers in the main control panel and wiring in connections to the PLC controller for the CatOx. New contact in the control panel needs to be used for the CatOx control loop to the PLC because the one originally specified has been used for blower control. Fidelity completed installation of new electrical conduit and connected the CatOx to the VCV. Pipes damaged from freezing weather repaired. Collected SVE system readings and SVE influent and effluent air samples. Greased SVE blower. Pumped out liquid in moisture separator in a 55-gallon drum. Collected carbon samples of Set 1 and Set 2 carbon vessels. EOS programmed new file with CatOx on it. Low vacuum transmitter delay changed to 1 hour to allow CatOx to reach temperature and allow VCV to open. Water cleared out of the SVE lines. AS at the deep wells turned on with flow ~ 1-3 CFM per well. AS system temporarily turned on; deep wells intially turned on and then shallow wells. Portable air compressor hooked up to AS-7. PID readings collected at SVE system. Collected system readings at both AS and SVE systems. SVE effluent air sample collected. Collected SVE system readings and SVE effluent air sample. AS remains off. Collected SVE system readings and SVE influent and effluent air samples. Greased SVE blower. Broken meters repaired. Install cam-lock caps on the 10 unused SVE legs to keep dust/dirt and biologicals out of the trailer. Pumped out liquid in moisture separator in a 55-gallon drum. CatOx forklifted into the system fenced enclosure. Measurements taken for installation of FALCO 300 CatOx. High level shutdown on moisture separator tested. Completed securing the supports for the storage tank piping. System checked and readings collected. The FALCO 300 CatOx was piped to the SVE system by SAEDACCO. Piping the CatOx to the SVE system by SAEDACCO, begin electrical connection of the CatOx to the power supply and control panel by Fidelity. Carbon vessels and associated piping moved off-site. Due to upwelling at 3 monitoring wells (MW-16, MW-17D, and MW-18), AS flow was intially lowered. However, due to continued upwelling, AS shutdown to depressurize the formation and install fittings to put threaded caps on the wells. Double-walled storage tank unloaded from FedEx truck and moved to its position in the system compound. Add plumbing to the storage tank. The 4 carbon vessels vacuumed out by CCI. Damaged sight glass on moisture separator and check valve on its discharge piping replaced. Vaccum relief valve installed on SVE system System shut down for maintenance. Oil changed on SVE blower and AS compressor. Checks performed on the dilution air filters, SVE particulate filters, air intake filters, and filter on VCV. System restarted after maintenance checks. The flapper on the check valve was removed to reduce the back pressure on the SVE blower. Dilution air and air flow from the SVE wells were adjusted to evaluate the changes in back pressure. System checked and readings collected. Collected pressure/vacuum readings at monitoring wells. Deep AS wells on at ~ 2 CFM at 18 psi. Attempted to troubleshoot tripped breaker of the AS compressor. Heat exchanger shut down. Vacuum readings at wellheads of SVE-1, SVE-2, and SVE-5 recorded. Condition of the AS and SVE well flowmeters at the system manifold recorded. Both deep and shallow AS wells turned on. Tighten belts on the SVE blower. PI-101 gauge to be replaced at next maintenance visit. Sight glass, level switch piping, and transfer pump discharge piping replaced on the Vapor Liquid Separator (VLS) unit (sight glass and piping damaged due to freezing weather). Attaway Electrical Services (Attaway) connected the high high level float switch in the storage tank to the control panel and tested. AS compressor breaker adjusted by Attaway; ground-fault circuit interrupter (GFCI) outlet in the control panel changed out. Attaway recorded information to upgrade the SVE blower motor to 25 HP, including the motor started contactor and breaker. Both the SVE and AS was restarted after the electrical repairs. Inventory of MW conditions completed. Double-walled storage tank for moisture collection from the SVE system plumbed in; high high level float switch installed in the tank, and supports built for tank piping. Welling of groundwater at MW-19 observed; AS shut off. Upwelling at MW-19 observed; AS shut off. Collected system readings and greased the SVE blower. VCV for the CatOx installed, electrical work for the connection of the CatOx and VCV continued. CatOx system anchored and piping braced. Collected system readings for the SVE blower and the oxidizer; specifications of the check valve on the effluent stack noted for future potential adjustments. Date: Type: Remedial System Maintenance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Table 5 System Maintenance Description 4/19/2018 System O&M 4/25/2018 System O&M 4/26/2018 System O&M 5/14/2018 System O&M 5/16/2018 System O&M 5/29/2018 SVE motor upgrade, tree trimming, well pad repairs 5/30/2018 System O&M 5/31/2018 System O&M 6/20/2018 Electrical upgrade 6/25/2018 System O&M 6/27/2018 Electrical components and distance measurements for Arc Flash risk assessment 7/5/2018 System shutdown 7/10/2018 System restart 7/23/2018 System O&M 8/13/2018 System shutdown 8/14/2018 System restart 8/22/2018 System O&M 9/5/2018 System O&M 9/11/2018 Installation of new panel box for PLC 9/12/2018 Adjustment of temperature preset on fan 9/18/2018 Turn on CatOx 9/19/2018 System O&M 10/10/2018 Shutdown prior to hurricane 10/12/2018 Restart after the hurricane 10/29/2018 System O&M 11/1/2018 AS compressor installation Lewis Systems on-site with AECOM to reinstall the AS compressor after completing the necessary piping and electrical connections. The AS system was restarted. Shut system down ahead of hurricane. Set exhaust fan themorstat to highest setting and check general integrity of the trailor doors, straps, etc. Restart system following hurricane and reset the exhaust fan to normal operating temperature. System checked and readings collected. Effluent flow meters for the SVE were cleaned. Collect SVE influent and effluent air samples. System shutdown at 10:00 am prior to groundwater sampling event on 7/10/2018 SVE system shutdown at 9:00 am prior to groundwater sampling event on 8/14/2018. AS system has continued to remain off. Arrived on-site to system down due to 'Oxidizer Fault' alarm. Reset the system and restarted the system (AS operating with the deep wells only). Deep AS wells are operating between 3 and 4 SCFM Arrived on-site to system down due to 'Oxidizer Fault' alarm. Reset and restarted the system (AS operating with the deep wells only). System down due to 'Oxidizer Fault' alarm. System was designed for 230V but only 208V available at our site, thus some of the wiring and electrical components were undersized. Attaway replaced the 175 amp main breaker in the control panel with a 200 amp main breaker. Wiring from the main disconnect panel on the trailer to the control panel upgraded to 3/0 wiring. Replaced the three 175 amp fuses in the electric drop with 200 amp fuses. 208V seems to typically be more common available service. New programming added to the PLC to enable the oxidizer to close the VCV and restart in "Auto" mode. The phase monitor delay reset from 1 second delay to a 20 second delay to obviate the 'Oxidizer Fault' alarm. Electrical specifications and types of wiring between different electrical system components, trailer disconnect, and main control panel noted, and measured distances for the arc flash risk assessment. The July 2018 arc flash risk assessment covered the electrical equipment throughout the facility, including disconnect switches and the motor control panel. All pertinent electrical components were analyzed as part of this report, including motors, circuit breakers, fuses, and conductors. After completion of the groundwater sampling event, the SVE system was restarted. The AS was not restarted due to an oil leak in the compressor, potentially due to a bad seal or gasket. Arrived on-site to system down due to 'Oxidizer Fault' alarm. Reset and restarted the system. After completion of the groundwater sampling event, only the SVE system was restarted. 5 wells that were not previously sampled on 7/10/2018 were sampled on 8/14/2018. Lewis Systems on-site to evaluate the repair required on the AS compressor which was leaking oil. System checked and readings collected for the SVE with the AS not in operation. System checked and readings collected. Vapor samples collected at the oxidizer effluent stack and at the SVE influent. Collect SVE influent and effluent air samples. Reset the breaker on the AS compressor as it had tripped. Dead branches of 2 trees along system driveway trimmed by Geologic exploration tree trimming crew. System shutdown for SVE motor upgrade. SVE motor upgraded from a 20 HP to a 25 HP by Attaway Electrical Services; 100 amp breakers installed for both the SVE blower and AS compressor; new wiring and motor starter/contactor installed for the SVE blower. Were able to eliminate bleed air. Geologic exploration well repair crew reaplced the well pads for MW-13, MW-14, MW-18, and MW-19, and installed new manholes. System checked and readings collected. Collect SVE influent and effluent air samples. Reset and restarted the system twice due to the 'Oxidizer Fault' alarm. Collect SVE influent and effluent air samples. Arrived on-site to system down due to 'Oxidizer Fault' alarm. Reset and restarted the system. Increased the dilution air flow to 60 SCFM. Attaway mounted a new panel box for the PLC, UPS, and telemetry. AECOM replaced the filter mat for the fresh air intake, and installed a new particualte filter for the SVE blower. Restarted only the SVE system. System checked and readings collected for the SVE with the AS not in operation. Fire extinguisher inspected. AS remains off for repair of the compressor. Collect SVE influent and effluent air samples. AS compressor disconnected and taken off-site by Lewis Systems for repair. SVE system restarted and checked to ensure operation. System checked and readings collected. Blower and blower motor were greased. Several airflow meters were cleaned. Restart system following strong storms and reset the exhaust fan to normal operating temperature. Shut system down ahead of strong storms. Set exhaust fan themorstat to highest setting and check general integrity of the trailor doors, straps, etc. Date: Type: Remedial System Maintenance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Table 5 System Maintenance Description 11/6/2018 System maintenance 11/7/2018 System maintenance 11/26/2018 Float switch troubleshooting and mud removal from monitoring wells 11/27/2018 Float switch electrical troubleshooting 11/28/2018 System O&M 12/18/2018 System O&M 1/8/2019 System restart 1/9/2019 Vacuuming of storage tanks and purge water 1/11/2019 System O&M 1/14/2019 System check 1/16/2019 System O&M 1/21/2019 System check 1/29/2019 System O&M 2/5/2019 System O&M 2/14/2019 System check 2/19/2019 System O&M 3/5/2019 System check 3/26/2019 System O&M 4/29/2019 System O&M 5/8/2019 System O&M - Semiannual 5/20/2019 System O&M 6/13/2019 System O&M and shutdown 7/16/2019 System check 7/17/2019 System check 7/25/2019 System O&M 8/2/2019 System Restart System check to ensure it is operating normally. Set flows for AS wells and compressor pressures. Filters checked and lines drained of condensation. System checked and readings collected. Condensate from the moisture separator emptied into the holding tank. Increased T1 temperature of the CatOx from 330°C to 350°C to assess if destruction efficiency increases and if it was the cause for the earlier automatic power on/off of the system. System was shutting down and restarting automatically. EOS contacted to diagnose the problem. Changed the voltage setting from 230 volts to 208 volts in the Phase Monitor Unit of the control panel, thereby solving the issue. System checked and readings collected. Collect SVE influent and effluent air samples. Conducted semiannual system check and maintenance. Replaced filters on the air compressor and in-line particulate filter on the SVE system. Cleaned the SVE blower and air compressor, drained the existing oil, and replaced with new oil. Greased the SVE blower and blower motor, and air compressor motor. Cleaned the system trailer and compound. System checked and readings collected. Collect SVE influent and effluent air samples. Following system check, shutdown the system to allow groundwater levels to equilibrate for annual groundwater monitoring event in July 2019. AS and SVE system restarted after completion of the groundwater monitoring event on July 15 and 16. Upon arrival, the system was continuosly shutting down and restarting itself. After discussion with EOS, the system was shutdown and restarted after 50 minutes; it proceeded to run smoothly thereafter. System checked and readings collected. Collect SVE influent and effluent air samples. System checked and readings collected. Collect SVE influent and effluent air samples. System shutdown and water drained from the moisture separator and the transfer pump discharge piping to prevent freezing and breakage. System left off to allow water levels to equilibrate before the January 2019 groundwater sampling event. AS/SVE system turned back on after completion of groundwater sampling on 1/8/2019. CCI completed vacauum extraction of the condensate collected in the storage tank and the drums of purge water from the groundwater monitoring event. Approximately 300 gallons of condensate and purge water extracted for disposal at the CMS facility. Onsite to check system readings and to ensure that it wasn’t shutting down and restarting automatically. Completed oil change on SVE blower. Installed a new check valve on the cool side of the heat exchanger to prevent back pressure into the air compressor. Removed water from the suction line leading from the heat exchanger to the moisture separator. Arrived on-site with the AS/SVE system down due to trigger of the high-high level float switch in the moisture separator. As the transfer pump is working but the high-level float switch is not working, Fidelity contacted for troubleshooting the electrical connections. CCI completed vacuuming the mud in monitoring wells, MW-1, MW-5, MW-11, MW-12, and MW-13, purge water from the three 55-gallon drums, and the condensate in the double-walled storage tank. Fidelity rectified an incorrect electrical connection of the high-level float switch in the PLC groud connections. AS/SVE system turned back on after repair. AS system was down due to high pressure at the heat exchanger. Restarted it after adjusting the pressure setting on the heat exchanger to a lower pressure. System check to ensure it is operating normally. Storage tank was observed to be 25% full. Air flow into the AS wells close to MW-1 and MW-6 increased. System checked and readings collected. Collect SVE influent and effluent air samples. Ordered pipe and fittings for repairing the moisture separator sight glass. Condensate from the moisture separator pumped into the storage tank. The storage tank was vacuumed out by CCI for disposal at the CMS facility (300 gallons). Sight glass of the moisture separator repaired. System check to ensure it is operating normally. Storage tank was observed to be ~40% full (126 gallons). System checked and readings collected. Collect SVE influent and effluent air samples. Flow meter replaced for AS-2 and drain line from Heat Exchanger to Moisture Separator cleared to remove blockage. System checked and readings collected. Collect SVE influent and effluent air samples. System check to ensure it is operating normally. Moisture separator was 60% full with approximately 20 gallons of fluid in the storage tank . System checked and readings collected. Collect SVE influent and effluent air samples. System checked and readings collected. Collect SVE influent and effluent air samples. Storage tank ~90% Following receipt of 'Power Oxidizer Fault' alarm on 8/1/2019, field staff mobilize to the site on 8/2/2019 and restart the system. The alarm is attributable to storms in the area. Date: Type: Remedial System Maintenance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Table 5 System Maintenance Description 8/19/2019 System Restart 8/28/2019 System O&M 9/26/2019 System O&M 10/14/2019 System Restart 10/25/2019 Sample collected for waste profiling 10/28/2019 System O&M 11/18/2019 System O&M - Semiannual 11/21/2019 System O&M 12/17/2019 System O&M 1/9/2020 Groundwater sampling 1/10/2020 Evacuation of condensate storage tank and purged groundwater. 1/28/2020 System O&M 2/7/2020 Flow meter installation 2/10/2020 Flow meter installation 2/18/2020 System O&M; evacuation of condensate storage tank. 3/24/2020 System O&M 3/27/2020 SVE Influent Flow Meter install 4/13/2020 System restart 4/22/2020 System O&M 4/23/2020 System semi-annual maintenance 5/11/2020 System Restart 6/3/2020 System O&M 6/25/2020 System O&M 7/16/2020 Instrument replacements and System restart 7/30/2020 System O&M 8/24/2020 System visit for modem reset System shutdown on its own due to power outage caused by overnight storms in the area. System restarted after equipment and damage checks. System checked and readings collected. Collect SVE influent and effluent air samples. System restarted as it had shut down on 10/12/2019 due to a power outage. Now all AS wells operating with the SVE component of the system. Water sample from the condensate tank to be analyzed for Method 8260B (toxicity characteristic leaching procedure [TCLP] benzene) needed for profiling and future disposal at the Shamrock Environmental Corporation facility. System checked and readings collected. Flow and vacuum readings not collected from the SVE wells. A new air water separtor transfer pump was wired in by Fidelity. Piping for the new pump installed by AECOM personnel. Pump tested and running ok. Collect SVE influent and effluent air samples. System checked, and readings collected. Collect SVE influent and effluent air samples. Preventative maintenance completed, including draining the moisture separator and piping in case of freeze conditions. Shutdown the system to allow groundwater conditions to reach equilibrium prior to the semi-annual sampling event in January 2020. System was found to be off due to the high high level alarm on the air water separator. Performed troubleshooting on the transfer pump, but as it likely needs to be replaced, ordered a new one from Grainger. Accumulated water in the air water separator emptied into drum. Oil changed in the SVE blower and air sparge compressor. Liquids collected in the storage tank and 2 drums of purge water taken off-site by CCI for disposal at Shamrock Environmental Corporation facility. Received alarms on 8/18/2019. Field staff mobilized to the site on 8/19/2019 and restarted the SVE system. As the AS was at higher than normal temperatures, the heat exchanger was disassembled, the radiator and fan blades were vacuumed and brushed, and then reassembled. AS system restarted. System checked and readings collected. Collect SVE influent and effluent air samples. System checked and readings collected. Collect SVE influent and effluent air samples. System checked and readings collected. Collect SVE influent and effluent air samples. Installed and recalibrated the influent flow meter for the SVE system; replaced the flow control valve on the sparge manifold for AS-1; replaced the intake filter for the fresh air fan. AS/SVE system turned back on after completion of groundwater sampling on 7/16/2020. System checked and readings collected. Collect SVE influent and effluent air samples. Fittings and flanges for the EDRCO SVE influent flow meter purchased and used to install the flow meter. The AS/SVE system restarted. Shutdown flow to AS-2R well and replaced the air flow meter for AS-2 at the system manifold. Shutdown flow to AS-1, AS-7, AS-8, and AS-9 well and replace their air flow meters at the system manifold. Air flow turned back on at these AS wells (AS-1 = 5 ACFM, 21 psi; AS-2R = 5 ACFM, 23.5 psi; AS-7 = 1 ACFM, 23.5 psi; AS-8 = 2.5 ACFM, 23 psi; AS-9 = 3.5 ACFM, 19 psi). Converting to SCFM at 65°F manifold temperature: AS-1 = 7.8 SCFM; AS-2R = 7.8 SCFM; AS-7 = 1.6 SCFM; AS-8 = 3.9 SCFM; AS-9 = 5.5 SCFM. System checked, and readings collected. Collect SVE influent and effluent air samples. The old SVE influent flow meter removed as it has to be replaced. The AS/SVE system turned off till 3/27/20 for the replacement. Total well depth at MW-6 measured (54.80 ft from TOC; no mud at the bottom of well). System checked, and readings collected. Collect SVE influent and effluent air samples. Fluids from the moisture separator pumped into the condensate storage tank. CCI vacuum truck extracts the fluids from the storage tank (approximately 240 gallons). Completed filter and oil changes, equipment checks and cleaning, compound maintenance and cleanup. System checked and readings collected. Collected SVE influent and effluent air samples. Entire system shutdown after the O&M tasks for the July semiannual groundwater sampling event. Groundwater purge and sampling completed at 6 wells. Restarted the AS/SVE system after the completion of groundwater sampling. Following unscheduled system shutdown on 5/9/2020, due to unknown reasons, field staff mobilize to the site on 5/11/2020 and restart the system. Equiment and operating parameters checked; system is running smoothly. System checked and readings collected. Collected SVE influent and effluent air samples. Removed the new Erdco flowmeter to send back for calibration. Reinstalled the old meter and restarted the system. Air flowmeters at AS-1 and AS-9 to be evaluated at the next site visit due to stationary readings observed during this O&M event. CCI pumped the condensate storage tank and the drum of purge water from groundwater sampling. System checked for continued operation. System checked, and readings collected. Collect SVE influent and effluent air samples. Reset the modem to restart getting daily system operation emails; they had stopped on 8/19/20. Date: Type: Remedial System Maintenance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Table 5 System Maintenance Description 8/26/2020 System O&M 9/28/2020 System O&M 10/5/2020 System Shutdown 10/21/2020 MW-06 sampling and restart of the SVE system 10/28/2020 System O&M 11/19/2020 System O&M 12/16/2020 System O&M and Shutdown of SVE system 1/12/2021 Groundwater sampling 1/13/2021 System O&M 1/14/2021 System O&M 1/15/2020 Evacuation of condensate storage tank. 1/25/2021 System O&M 2/8/2021 Evacuation of condensate storage tank and moisture separator. 2/24/2021 System O&M 3/23/2021 System Maintenance 3/24/2021 System O&M 4/15/2021 Groundwater sampling at MW-6 4/28/2021 System Maintenance 4/29/2021 System O&M 5/25/2021 System O&M 6/23/2021 System O&M SVE = Soil vapor extraction SCFM = Standard cubic feet per minute VCV = Vapor control valve AS = Air sparge O&M = Operation and maintenance TCLP = toxicity characteristic leaching procedure CFM = cubic feet per minute CatOx = Catalytic Oxidizer PLC = Programmable Logic Controller °C = degree Celcius HP = Horsepower psi = pounds per square inch ACFM = actual cubic feet per minute AS and SVE system was found off on arrival at the site, possibly due to storms of the previous day. System restarted, regular checks completed, and SVE influent and effluent air samples collected. Turned off system before leaving the Site prior to the July semi-annual sampling event. AS and SVE system were found off on arrival. Only the SVE sytem was restarted. Groundwater purge and sampling completed at MW-6. AS system restarted after completion of groundwater monitoring.Completed inventory of repairs for the system. Semiannual system maintenance completed, including SVE blower and AS compressor oil changes, and filter replacements. System checked. Collect SVE influent and effluent air samples. System checked and SVE readings collected. Collect SVE influent and effluent air samples. The AS system is still off as waiting for the replacement air compressor. System checked. SVE readings could not be collected due to water in the lines. Collect SVE influent and effluent air samples. SVE influent Tedlar bag as empty on arriving at the lab, and therefore could not be sampled. Drained the moisture separator, pump, and discharge piping to prevent freezing. SVE system shutdown in preparation for groundwater sampling in January 2021. The AS system is still off as waiting for the replacement air compressor. MW-06 was purged and sampled. After completion of groundwater monitoring, performed semi-annual servicing of the SVE system and changed the oil in the SVE blower. Restarted the SVE system. The AS system is still off as waiting for the replacement air compressor. System checked and SVE readings collected. Collect SVE influent and effluent air samples. The AS system is still off as waiting for the replacement air compressor. System checked and readings collected. Collect SVE influent and effluent air samples. System checked and readings collected. Completed preventive maintenance on system equipment and site infrastructure. Collect SVE influent and effluent air samples. Significant air compressor failure occurred on 10/3/20 or 10/4/20 (weekend). Subsequently the AS/SVE system was shutdown on 10/5/.20. It will remain shutdown till after completion of groundwater sampling at well MW-06 on 10/21/20 System checked. Collect SVE influent and effluent air samples. System checked. SVE readings could not be collected due to water in the lines. Collect SVE influent and effluent air samples. Shamrock Environmental pumped approximately 263 gallons of condensate from the condensate tank. Greased bearings of SVE Blower. Shut down system to insulate the new compressor discharge piping, cleaned out accumulated grease on the blower and blower motor. Restarted the system. Old AS compressor removed by Lewis Systems to be recycled. New Rietschle 25 HP AS compressor installed in the system trailer. Groundwater gauging performed at all site wells. Groundwater purge and sampling completed at 6 wells. AS/SVE system left off after the completion of groundwater sampling, as the AS compressor replacement activity to be started on 1/13/2021. amroc nv ronmenta orporat on pumpe t e con ensate storage tan , w c a so ncu e purge water from groundwater sampling. 245 gallons removed. AS/SVE system checked for continued . . effluent air samples. Flows adjusted to the AS wells to maximize air flow for remediation in areas of Connected piping from the new AS compressor to the heat exchanger, and completed wiring connections. AS system started up, pressures adjusted, and sucessfully working. SVE system turned on and also operating well. Shamrock Environmental pumped approximately 320 gallons of condensate from the condensate tank and the moisture separator, combined. The moisture separator had been found to be 99% full. System checked for continued operation. System checked. SVE readings could not be collected due to water in the lines. Collect SVE influent and effluent air samples. Table 6 Air Sparge Performance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Site Days Days Hour Daily Hours of Total Hours Scheduled Percent Percent Process Visit Between Since Meter Designed Run Operation of Operation Down Time Run Time Run Time Date Site Visits Startup Reading Time (hours) Period Cumulative (hours) (period) (cumulative) 02/12/18 14,311.9 24 02/13/18 1 1 14,315.5 24 3.6 3.6 0 15.0% 15.0% 03/01/18 16 17 14,441.8 24 126.3 129.9 0 32.9% 31.8% 03/14/18 13 30 14,654.5 24 212.7 342.6 0 68.2% 47.6% 04/11/18 28 58 15,080.2 24 425.7 768.3 0 63.3% 55.2% 04/17/18 6 64 15,224.0 24 143.8 912.1 0 99.9% 59.4% 04/25/18 8 72 15,276.9 24 52.9 965.0 0 27.6% 55.8% 05/30/18 35 107 15,934.8 24 657.9 1,622.9 0 78.3% 63.2% 06/25/18 26 133 16,436.5 24 501.7 2,124.6 0 80.4% 66.6% 07/23/18 28 161 16,671.8 24 235.3 2,359.9 0 35.0% 61.1% 08/22/18 30 191 16,671.8 24 2,359.9 0 51.5% 09/19/18 28 219 16,671.8 24 2,359.9 0 44.9% 10/29/18 40 259 16,671.8 24 2,359.9 0 38.0% 11/28/18 30 289 17,078.6 24 406.8 2,766.7 0 56.5% 39.9% 12/18/18 20 309 17,550.5 24 471.9 3,238.6 0 98.3% 43.7% 01/16/19 29 338 17,733.5 24 183.0 3,421.6 0 26.3% 42.2% 01/29/19 13 351 18,046.5 24 313.0 3,734.6 0 100.0% 44.3% 02/19/19 21 372 18,545.8 24 499.3 4,233.9 0 99.1% 47.4% 03/26/19 35 407 19,385.8 24 840.0 5,073.9 0 100.0% 51.9% 04/29/19 34 441 20,198.3 24 812.5 5,886.4 0 99.6% 55.6% 05/20/19 21 462 20,696.6 24 498.3 6,384.7 0 98.9% 57.6% 06/13/19 24 486 21,273.4 24 576.8 6,961.5 0 100.0% 59.7% 07/25/19 42 528 21,486.4 24 213.0 7,174.5 0 21.1% 56.6% 08/28/19 34 562 22,240.6 24 754.2 7,928.7 0 92.4% 58.8% 09/26/19 29 591 22,935.8 24 695.2 8,623.9 0 99.9% 60.8% 10/28/19 32 623 23,654.0 24 718.2 9,342.1 0 93.5% 62.5% 11/21/19 24 647 24,192.8 24 538.8 9,880.9 0 93.5% 63.6% 12/17/19 26 673 24,814.3 24 621.5 10,502.4 0 99.6% 65.0% 01/28/20 42 715 25,265.3 24 451.0 10,953.4 0 44.7% 63.8% 02/18/20 21 736 25,769.4 24 504.1 11,457.5 0 100.0% 64.9% 03/24/20 35 771 26,578.2 24 808.8 12,266.3 0 96.3% 66.3% 04/22/20 29 800 27,193.0 24 614.8 12,881.1 0 88.3% 67.1% 06/03/20 42 842 28,147.3 24 954.3 13,835.4 0 94.7% 68.5% 06/25/20 22 864 28,665.8 24 518.5 14,353.9 0 98.2% 69.2% 07/30/20 35 899 28,907.4 24 241.6 14,595.5 0 28.8% 67.6% 08/26/20 27 926 29,555.9 24 648.5 15,244.0 0 100.0% 68.6% 09/28/20 33 959 30,348.4 24 792.5 16,036.5 0 100.0% 69.7% 10/28/20 30 989 30,495.9 24 147.5 16,184.0 0 20.5% 68.2% 11/19/20 22 1,011 30,495.9 24 16,184.0 0 66.7% 01/25/21 67 1,078 30,757.0 24 261.1 16,445.1 0 16.2% 63.6% 02/24/21 30 1,108 31,475.6 24 718.6 17,163.7 0 99.8% 64.5% 03/24/21 28 1,136 32,142.8 24 667.2 17,830.9 0 99.3% 65.4% 04/29/21 36 1,172 32,831.9 24 689.1 18,520.0 0 79.8% 65.8% 05/25/21 26 1,198 33,454.9 24 623.0 19,143.0 0 99.8% 66.6% 06/23/21 29 1,227 33,585.0 24 130.1 19,273.1 0 18.7% 65.4% AS = Air sparge Status AS Compressor Site Days Days Hour Daily Hours of Total Hours Scheduled Percent Percent Process Visit Between Since Meter Designed Run Operation of Operation Down Time Run Time Run Time Date Site Visits Startu Readin Time (hours) Period Cumulative (hours) (eriod) (cumulative) 06/19/17 14,967.1 24 - - 06/20/17 1 1 14,974.9 24 8 8 0 32.5% 32.5% 06/21/17 1 2 14,974.9 24 8 0 16.2% 07/21/17 30 32 14,999.8 24 25 33 0 3.5% 4.3% 08/03/17 13 45 15,312.8 24 313 346 0 100.0% 32.0% 08/11/17 8 53 15,506.8 24 194 540 0 100.0% 42.4% 08/24/17 13 66 15,819.9 24 313 853 0 100.0% 53.8% 09/28/17 35 101 16,558.3 24 738 1,591 0 87.9% 65.6% 10/05/17 7 108 16,723.5 24 165 1,756 0 98.3% 67.8% 10/06/17 1 109 16,745.4 24 22 1,778 0 91.3% 68.0% 10/09/17 3 112 16,818.7 24 73 1,852 0 100.0% 68.9% 10/17/17 8 120 17,010.1 24 191 2,043 0 99.7% 70.9% 10/26/17 9 129 17,229.1 24 219 2,262 0 100.0% 73.1% 11/28/17 33 162 17,938.0 24 709 2,971 0 89.5% 76.4% 12/20/17 22 184 18,468.3 24 530 3,501 0 100.0% 79.3% 02/12/18 54 238 18,732.7 24 264 3,766 0 20.4% 65.9% 02/13/18 1 239 18,753.8 24 21 3,787 0 87.9% 66.0% 03/01/18 16 255 18,927.8 24 174 3,961 0 45.3% 64.7% 03/14/18 13 268 19,238.7 24 311 4,272 0 99.6% 66.4% 04/11/18 28 296 19,835.3 24 597 4,868 0 88.8% 68.5% 04/17/18 6 302 19,979.1 24 144 5,012 0 99.9% 69.2% 04/19/18 2 304 20,009.9 24 31 5,043 0 64.2% 69.1% 04/25/18 6 310 20,034.0 24 24 5,067 0 16.7% 68.1% 05/14/18 19 329 20,356.8 24 323 5,390 0 70.8% 68.3% 05/30/18 16 345 20,693.9 24 337 5,727 0 87.8% 69.2% 06/25/18 26 371 21,198.3 24 504 6,231 0 80.8% 70.0% 07/23/18 28 399 21,743.9 24 546 6,777 0 81.2% 70.8% 08/22/18 30 429 22,297.8 24 554 7,331 0 76.9% 71.2% 09/19/18 28 457 22,816.6 24 519 7,850 0 77.2% 71.6% 10/29/18 40 497 23,730.8 24 914 8,764 0 95.2% 73.5% 11/28/18 30 527 24,225.0 24 494 9,258 0 68.6% 73.2% 12/18/18 20 547 24,699.6 24 475 9,733 0 98.9% 74.1% 01/16/19 29 576 24,885.9 24 186 9,919 0 26.8% 71.8% 01/29/19 13 589 25,198.9 24 313 10,232 0 100.0% 72.4% 02/19/19 21 610 25,698.6 24 500 10,732 0 99.1% 73.3% 03/26/19 35 645 26,538.6 24 840 11,572 0 100.0% 74.8% 04/29/19 34 679 27,356.1 24 818 12,389 0 100.0% 76.0% 05/20/19 21 700 27,854.9 24 499 12,888 0 99.0% 76.7% 06/13/19 24 724 28,431.8 24 577 13,465 0 100.0% 77.5% 07/25/19 42 766 28,646.2 24 214 13,679 0 21.3% 74.4% 08/28/19 34 800 29,402.6 24 756 14,436 0 92.7% 75.2% 09/26/19 29 829 30,098.0 24 695 15,131 0 99.9% 76.0% 10/28/19 32 861 30,817.0 24 719 15,850 0 93.6% 76.7% 11/21/19 24 885 31,357.2 24 540 16,390 0 93.8% 77.2% 12/17/19 26 911 31,978.7 24 622 17,012 0 99.6% 77.8% 01/28/20 42 953 32,430.5 24 452 17,463 0 44.8% 76.4% 02/18/20 21 974 32,934.6 24 504 17,968 0 100.0% 76.9% 03/24/20 35 1,009 33,775.0 24 840 18,808 0 100.0% 77.7% 04/22/20 29 1,038 34,391.1 24 616 19,424 0 88.5% 78.0% 06/03/20 42 1,080 35,346.4 24 955 20,379 0 94.8% 78.6% 06/25/20 22 1,102 35,865.0 24 519 20,898 0 98.2% 79.0% 07/30/20 35 1,137 36,109.2 24 244 21,142 0 29.1% 77.5% 08/26/20 27 1,164 36,757.7 24 649 21,791 0 100.0% 78.0% 09/28/20 33 1,197 37,550.2 24 793 22,583 0 100.0% 78.6% 10/28/20 30 1,227 37,881.9 24 332 22,915 0 46.1% 77.8% 11/19/20 22 1,249 38,321.3 24 439 23,354 0 83.2% 77.9% 12/16/20 27 1,276 38,970.2 24 649 24,003 0 100.0% 78.4% 01/25/21 40 1,316 39,232.2 24 262 24,265 0 27.3% 76.8% 02/24/21 30 1,346 39,952.4 24 720 24,985 0 100.0% 77.3% 03/24/21 28 1,374 40,619.8 24 667 25,653 0 99.3% 77.8% 04/29/21 36 1,410 41,310.6 24 691 26,344 0 80.0% 77.8% 05/25/21 26 1,436 41,933.5 24 623 26,966 0 99.8% 78.2% 06/23/21 29 1,465 42,604.0 24 671 27,637 0 96.3% 78.6% Status SVE Blower Table 7 Soil Vapor Extraction Performance Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Pressure Flow Pressure Flow Pressure Flow Pressure Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 7/21/2017 4.5 27.0 7/21/2017 4.0 27.0 7/21/2017 2.5 28.0 7/21/2017 3.0 27.5 10/5/2017 -- -- 10/5/2017 2.2 28.0 10/5/2017 1.5 27.5 10/5/2017 1.7 28.0 10/6/2017 2.5 26.0 10/6/2017 2.5 29.5 10/6/2017 2.0 29.0 10/6/2017 2.0 29.0 2/12/2018 3.5 27.0 2/12/2018 -- -- 2/12/2018 -- -- 2/12/2018 -- -- 2/13/2018 3.0 22.5 2/13/2018 2.5 23.0 2/13/2018 1.5 23.0 2/13/2018 3.0 23.0 3/1/2018 2.0 21.0 3/1/2018 1.0 22.0 3/1/2018 2.0 21.0 3/1/2018 3.0 21.5 3/7/2018 1.0 18.0 3/7/2018 -- -- 3/7/2018 -- -- 3/7/2018 -- -- 4/25/2018 1.0 20.7 4/25/2018 -- -- 4/25/2018 -- -- 4/25/2018 -- -- 5/30/2018 1.0 17.5 5/30/2018 1.0 19.0 5/30/2018 3.0 16.5 5/30/2018 3.5 20.0 6/25/2018 1.0 19.0 6/25/2018 1.0 19.5 6/25/2018 2.5 20.5 6/25/2018 4.0 21.0 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 11/28/2018 4.0 20.5 11/28/2018 1.0 21.0 11/28/2018 1.0 20.5 11/28/2018 1.0 21.0 12/18/2018 4.5 18.5 12/18/2018 1.0 19.5 12/18/2018 1.0 18.7 12/18/2018 1.0 18.7 1/29/2019 5.0 19.8 1/29/2019 1.0 20.2 1/29/2019 1.0 19.7 1/29/2019 1.0 19.5 2/19/2019 5.0 19.5 2/19/2019 1.0 20.0 2/19/2019 1.0 19.5 2/19/2019 1.0 19.5 3/26/2019 5.0 18.5 3/26/2019 5.0 17.5 3/26/2019 1.0 18.5 3/26/2019 1.0 18.5 4/29/2019 5.5 19.5 4/29/2019 5.5 20.5 4/29/2019 1.0 20.0 4/29/2019 1.0 20.0 5/20/2019 5.0 21.0 5/20/2019 5.5 22.0 5/20/2019 1.0 21.0 5/20/2019 1.0 21.5 6/13/2019 5.3 21.0 6/13/2019 5.5 22.0 6/13/2019 1.0 21.0 6/13/2019 1.0 21.5 7/25/2019 4.0 19.0 7/25/2019 4.5 20.0 7/25/2019 1.0 19.0 7/25/2019 1.0 19.0 8/28/2019 1.0 19.5 8/28/2019 1.0 19.5 8/28/2019 1.0 19.5 8/28/2019 1.0 19.5 9/26/2019 1.0 19.5 9/26/2019 1.0 20.0 9/26/2019 1.0 19.5 9/26/2019 1.0 19.5 10/28/2019 1.0 20.5 10/28/2019 1.0 21.0 10/28/2019 1.0 20.5 10/28/2019 1.0 20.5 11/21/2019 1.0 17.0 11/21/2019 1.0 17.5 11/21/2019 1.0 17.0 11/21/2019 1.0 17.0 12/17/2019 1.0 22.0 12/17/2019 1.0 22.0 12/17/2019 1.0 21.5 12/17/2019 1.0 22.0 1/28/2020 1.0 21.0 1/28/2020 1.0 22.0 1/28/2020 1.0 21.0 1/28/2020 1.0 21.5 2/18/2020 7.5 22.5 2/18/2020 8.9 25.5 2/18/2020 1.0 24.0 2/18/2020 -- -- 3/24/2020 8.0 24.0 3/24/2020 8.8 24.5 3/24/2020 1.0 23.5 3/24/2020 -- -- 4/22/2020 9.2 22.5 4/22/2020 8.5 23.0 4/22/2020 1.0 22.0 4/22/2020 -- -- 6/3/2020 1.0 -- 6/3/2020 11.6 -- 6/3/2020 1.0 20.0 6/3/2020 -- -- 6/25/2020 11.3 19.0 6/25/2020 9.7 20.0 6/25/2020 1.0 19.0 6/25/2020 -- -- 7/30/2020 9.5 24.0 7/30/2020 7.1 24.0 7/30/2020 -- -- 7/30/2020 -- -- 8/26/2020 9.5 22.5 8/26/2020 7.6 22.5 8/26/2020 -- -- 8/26/2020 -- -- 9/28/2020 10.8 22.0 9/28/2020 9.1 21.0 9/28/2020 -- -- 9/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 1/25/2021 7.2 23.0 1/25/2021 6.4 23.0 1/25/2021 -- -- 1/25/2021 -- -- 2/24/2021 8.5 22.0 2/24/2021 6.9 21.0 2/24/2021 -- -- 2/24/2021 -- -- 3/24/2021 7.8 21.5 3/24/2021 7.7 20.5 3/24/2021 -- -- 3/24/2021 -- -- 4/29/2021 6.9 22.0 4/29/2021 6.9 22.0 4/29/2021 -- -- 4/29/2021 -- -- 5/25/2021 8.5 22.0 5/25/2021 8.9 21.5 5/25/2021 -- -- 5/25/2021 -- -- 6/23/2021 6.3 24.0 6/23/2021 7.0 23.0 6/23/2021 -- -- 6/23/2021 -- -- Notes: Well with 0.0 SCFM is one with air flow turned on, but no breakthrough achieved in the well. Wells with 1.0 SCFM indicate at least minimal flow as the meter is broken. -- indicates the air is turned offFlow recorded in standard cubic feet per minute (scfm) Pressure recorded in pounds per square inch (PSI) bgs = below ground surface Flow meters at AS-1, AS-2R, AS-7, AS-8, and AS-9 changed from Erdco to Dwyer. Flow corrected to SCFM using conversion factor. Statesville, Iredell County, North Carolina 1237 West Front Street Former Coastal Mart No. 443 Air Sparge Well Data Table 8 DateDate AS-2R 2 60 AS-3 63-65 AS-4 2 60 Date Date AS-1 2 75 73-75 58-60 2 65 58-60 WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Pressure Flow Pressure Flow Pressure Flow Pressure Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 7/21/2017 3.0 27.0 7/21/2017 <1.0 28.0 7/21/2017 <1.0 28.0 7/21/2017 2.5 28.0 10/5/2017 -- -- 10/5/2017 1.0 28.5 10/5/2017 -- -- 10/5/2017 1.0 28.0 10/6/2017 2.0 26.0 10/6/2017 1.5 29.5 10/6/2017 1.0 40.0 10/6/2017 2.0 29.5 2/12/2018 3.0 27.0 2/12/2018 -- -- 2/12/2018 0.0 29.0 2/12/2018 -- -- 2/13/2018 <1.0 22.0 2/13/2018 1.0 23.0 2/13/2018 <1.0 24.0 2/13/2018 1.0 23.0 3/1/2018 2.0 21.5 3/1/2018 2.0 21.5 3/1/2018 1.5 22.2 3/1/2018 2.0 21.5 3/7/2018 2.0 19.0 3/7/2018 -- -- 3/7/2018 1.5 21.0 3/7/2018 -- -- 4/25/2018 1.0 20.5 4/25/2018 -- -- 4/25/2018 1.5 22.2 4/25/2018 -- -- 5/30/2018 1.0 18.5 5/30/2018 2.0 20.5 5/30/2018 2.0 21.0 5/30/2018 -- -- 6/25/2018 1.0 20.0 6/25/2018 3.0 21.5 6/25/2018 2.0 22.0 6/25/2018 3.5 21.0 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 11/28/2018 1.0 20.0 11/28/2018 3.0 21.5 11/28/2018 1.5 22.0 11/28/2018 2.5 21.0 12/18/2018 1.0 18.0 12/18/2018 3.0 19.0 12/18/2018 2.0 20.0 12/18/2018 3.0 19.0 1/29/2019 1.0 19.0 1/29/2019 2.5 20.0 1/29/2019 1.0 20.8 1/29/2019 2.5 19.8 2/19/2019 1.0 18.8 2/19/2019 2.5 20.0 2/19/2019 2.0 20.8 2/19/2019 2.5 19.7 3/26/2019 1.0 18.0 3/26/2019 3.0 19.0 3/26/2019 1.5 19.5 3/26/2019 3.0 19.0 4/29/2019 1.0 19.0 4/29/2019 3.0 20.0 4/29/2019 1.0 21.0 4/29/2019 3.0 20.0 5/20/2019 1.0 20.5 5/20/2019 2.5 22.0 5/20/2019 1.5 22.5 5/20/2019 2.5 21.5 6/13/2019 1.0 20.5 6/13/2019 2.5 21.5 6/13/2019 1.0 22.0 6/13/2019 2.5 21.5 7/25/2019 1.0 18.5 7/25/2019 2.5 19.5 7/25/2019 1.5 20.0 7/25/2019 2.5 19.5 8/28/2019 1.0 18.5 8/28/2019 3.5 19.5 8/28/2019 1.0 20.5 8/28/2019 2.5 19.5 9/26/2019 1.0 18.5 9/26/2019 2.5 20.0 9/26/2019 1.0 21.0 9/26/2019 3.0 19.5 10/28/2019 1.0 19.5 10/28/2019 2.5 21.0 10/28/2019 1.0 21.5 10/28/2019 2.5 20.5 11/21/2019 1.0 16.0 11/21/2019 2.0 17.0 11/21/2019 1.0 18.0 11/21/2019 2.5 17.0 12/17/2019 1.0 21.0 12/17/2019 3.0 22.0 12/17/2019 1.0 22.5 12/17/2019 3.5 22.0 1/28/2020 1.0 20.5 1/28/2020 3.0 22.0 1/28/2020 1.0 22.0 1/28/2020 4.0 21.5 2/18/2020 1.0 21.0 2/18/2020 2.5 25.0 2/18/2020 1.6 26.0 2/18/2020 4.0 25.0 3/24/2020 1.0 20.0 3/24/2020 3.0 24.0 3/24/2020 1.0 25.0 3/24/2020 4.0 24.0 4/22/2020 1.0 19.0 4/22/2020 2.5 23.0 4/22/2020 1.6 23.5 4/22/2020 3.8 22.5 6/3/2020 1.0 19.0 6/3/2020 2.5 20.5 6/3/2020 3.0 22.0 6/3/2020 4.4 21.0 6/25/2020 1.0 18.5 6/25/2020 2.5 19.0 6/25/2020 2.1 20.0 6/25/2020 4.4 19.0 7/30/2020 1.0 20.5 7/30/2020 2.5 23.0 7/30/2020 2.3 23.0 7/30/2020 3.1 22.5 8/26/2020 -- -- 8/26/2020 2.5 21.5 8/26/2020 1.5 22.0 8/26/2020 3.0 21.5 9/28/2020 -- -- 9/28/2020 2.5 21.0 9/28/2020 1.5 22.0 9/28/2020 4.6 21.0 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 1/25/2021 -- -- 1/25/2021 1.5 22.0 1/25/2021 2.2 23.0 1/25/2021 1.6 22.0 2/24/2021 -- -- 2/24/2021 2.0 20.0 2/24/2021 3.3 21.0 2/24/2021 3.0 20.5 3/24/2021 -- -- 3/24/2021 1.5 20.0 3/24/2021 3.1 21.0 3/24/2021 3.3 20.0 4/29/2021 -- -- 4/29/2021 1.5 21.0 4/29/2021 2.3 22.0 4/29/2021 3.0 22.0 5/25/2021 -- -- 5/25/2021 2.0 21.0 5/25/2021 2.3 22.0 5/25/2021 3.5 21.0 6/23/2021 -- -- 6/23/2021 2.0 22.5 6/23/2021 2.4 24.0 6/23/2021 3.9 23.0 Notes: Well with 0.0 SCFM is one with air flow turned on, but no breakthrough achieved in the well. Wells with 1.0 SCFM indicate at least minimal flow as the meter is broken. -- indicates the air is turned offFlow recorded in standard cubic feet per minute (scfm) Pressure recorded in pounds per square inch (PSI) bgs = below ground surface Flow meters at AS-1, AS-2R, AS-7, AS-8, and AS-9 changed from Erdco to Dwyer. Flow corrected to SCFM using conversion factor. Statesville, Iredell County, North Carolina 1237 West Front Street Former Coastal Mart No. 443 Air Sparge Well Data Table 8 AS-5 AS-6 75 66 AS-7 73-75 64-66 75-77 AS-8 2 2 2 2 Date Date Date 77 60 58-60 Date WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Pressure Flow Pressure Flow Pressure Flow Pressure Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 7/21/2017 4.0 27.0 7/21/2017 <1 28.0 7/21/2017 5.0 28.0 7/21/2017 4.0 25.0 10/5/2017 -- -- 10/5/2017 1.0 28.5 10/5/2017 -- -- 10/5/2017 -- -- 10/6/2017 2.0 25.0 10/6/2017 2.0 29.5 10/6/2017 2.0 26.0 10/6/2017 2.5 25.5 2/12/2018 3.0 26.0 2/12/2018 -- -- 2/12/2018 2.5 28.0 2/12/2018 2.5 26.0 2/13/2018 1.0 23.0 2/13/2018 1.0 23.5 2/13/2018 1.5 23.0 2/13/2018 4.0 23.0 3/1/2018 2.0 21.0 3/1/2018 2.5 22.0 3/1/2018 3.0 21.5 3/1/2018 2.5 21.5 3/7/2018 1.5 18.5 3/7/2018 -- -- 3/7/2018 1.5 19.0 3/7/2018 1.5 19.5 4/25/2018 3.0 20.7 4/25/2018 -- -- 4/25/2018 3.0 21.0 4/25/2018 3.0 21.1 5/30/2018 4.0 18.0 5/30/2018 3.5 20.5 5/30/2018 4.0 17.0 5/30/2018 4.0 17.5 6/25/2018 1.0 19.0 6/25/2018 4.0 21.0 6/25/2018 3.0 18.5 6/25/2018 2.5 19.0 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 11/28/2018 1.0 20.5 11/28/2018 4.0 21.0 11/28/2018 1.0 21.0 11/28/2018 1.0 21.0 12/18/2018 1.0 18.5 12/18/2018 4.0 19.5 12/18/2018 1.0 19.0 12/18/2018 1.0 19.0 1/29/2019 1.0 19.5 1/29/2019 3.5 20.0 1/29/2019 1.0 20.0 1/29/2019 1.0 20.0 2/19/2019 1.0 19.5 2/19/2019 4.0 20.0 2/19/2019 1.0 20.0 2/19/2019 1.0 20.0 3/26/2019 1.0 18.5 3/26/2019 3.5 19.0 3/26/2019 1.0 19.0 3/26/2019 1.0 19.0 4/29/2019 1.0 19.5 4/29/2019 4.5 20.5 4/29/2019 1.0 20.0 4/29/2019 1.0 20.0 5/20/2019 1.0 21.0 5/20/2019 4.0 21.5 5/20/2019 1.0 21.5 5/20/2019 1.0 22.0 6/13/2019 1.0 21.0 6/13/2019 4.5 22.0 6/13/2019 1.0 21.5 6/13/2019 1.0 21.5 7/25/2019 1.0 19.0 7/25/2019 2.0 20.0 7/25/2019 1.0 19.5 7/25/2019 1.0 19.5 8/28/2019 1.0 19.0 8/28/2019 1.0 20.0 8/28/2019 1.0 20.0 8/28/2019 1.0 20.0 9/26/2019 1.0 19.0 9/26/2019 4.0 20.0 9/26/2019 1.0 20.0 9/26/2019 1.0 20.0 10/28/2019 1.0 20.0 10/28/2019 4.0 21.0 10/28/2019 1.0 21.0 10/28/2019 1.0 21.0 11/21/2019 1.0 17.0 11/21/2019 2.0 18.0 11/21/2019 1.5 17.5 11/21/2019 1.0 17.0 12/17/2019 1.0 21.5 12/17/2019 4.5 22.0 12/17/2019 1.0 22.0 12/17/2019 1.0 22.0 1/28/2020 1.0 21.0 1/28/2020 4.0 22.0 1/28/2020 1.0 21.5 1/28/2020 1.0 22.0 2/18/2020 4.3 21.0 2/18/2020 -- -- 2/18/2020 -- -- 2/18/2020 1.0 23.0 3/24/2020 5.4 22.0 3/24/2020 -- -- 3/24/2020 -- -- 3/24/2020 1.0 21.5 4/22/2020 5.3 21.0 4/22/2020 -- -- 4/22/2020 -- -- 4/22/2020 1.0 20.5 6/3/2020 1.0 20.0 6/3/2020 -- -- 6/3/2020 -- -- 6/3/2020 1.0 21.0 6/25/2020 6.5 18.0 6/25/2020 -- -- 6/25/2020 -- -- 6/25/2020 1.0 18.0 7/30/2020 5.3 21.0 7/30/2020 -- -- 7/30/2020 -- -- 7/30/2020 1.0 19.5 8/26/2020 5.2 20.0 8/26/2020 -- -- 8/26/2020 -- -- 8/26/2020 1.0 18.0 9/28/2020 5.2 19.0 9/28/2020 -- -- 9/28/2020 -- -- 9/28/2020 1.0 16.0 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 1/25/2021 3.9 21.0 1/25/2021 1.5 21.0 1/25/2021 -- -- 1/25/2021 1.0 21.0 2/24/2021 4.8 20.0 2/24/2021 1.5 18.5 2/24/2021 -- -- 2/24/2021 1.0 19.0 3/24/2021 4.6 20.0 3/24/2021 -- -- 3/24/2021 -- -- 3/24/2021 1.0 19.0 4/29/2021 4.5 20.5 4/29/2021 -- -- 4/29/2021 -- -- 4/29/2021 1.0 20.5 5/25/2021 6.0 20.0 5/25/2021 -- -- 5/25/2021 -- -- 5/25/2021 1.0 20.0 6/23/2021 3.1 22.0 6/23/2021 -- -- 6/23/2021 -- -- 6/23/2021 1.0 22.0 Notes: Well with 0.0 SCFM is one with air flow turned on, but no breakthrough achieved in the well. Wells with 1.0 SCFM indicate at least minimal flow as the meter is broken. -- indicates the air is turned offFlow recorded in standard cubic feet per minute (scfm) Pressure recorded in pounds per square inch (PSI) bgs = below ground surface Flow meters at AS-1, AS-2R, AS-7, AS-8, and AS-9 changed from Erdco to Dwyer. Flow corrected to SCFM using conversion factor. Statesville, Iredell County, North Carolina 1237 West Front Street Former Coastal Mart No. 443 Air Sparge Well Data Table 8 73-75 AS-9 AS-10 AS-11 AS-12 2 Date Date Date 75 60 75 73-75 58-60 73-75 Date 75 WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Pressure Flow Pressure Flow Pressure Flow Pressure Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 7/21/2017 4.0 26.0 7/21/2017 4.0 10.0 7/21/2017 3.5 27.0 7/21/2017 6.5 26.0 10/5/2017 1.8 27.0 10/5/2017 2.0 28.0 10/5/2017 1.0 28.0 10/5/2017 -- -- 10/6/2017 2.0 28.5 10/6/2017 2.5 29.5 10/6/2017 2.5 29.0 10/6/2017 2.5 26.5 2/12/2018 -- -- 2/12/2018 -- -- 2/12/2018 -- -- 2/12/2018 3.0 27.0 2/13/2018 2.0 22.0 2/13/2018 2.0 23.0 2/13/2018 2.0 23.0 2/13/2018 3.5 23.0 3/1/2018 3.0 20.5 3/1/2018 4.0 21.5 3/1/2018 1.0 21.0 3/1/2018 3.5 21.5 3/7/2018 -- -- 3/7/2018 -- -- 3/7/2018 -- -- 3/7/2018 2.0 19.5 4/25/2018 -- -- 4/25/2018 -- -- 4/25/2018 -- -- 4/25/2018 3.0 21.0 5/30/2018 3.0 19.5 5/30/2018 3.5 20.5 5/30/2018 1.0 19.5 5/30/2018 4.5 18.5 6/25/2018 1.0 20.0 6/25/2018 4.0 21.0 6/25/2018 1.0 19.5 6/25/2018 3.5 19.5 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 11/28/2018 1.0 20.0 11/28/2018 3.5 21.0 11/28/2018 1.0 20.5 11/28/2018 3.0 20.5 12/18/2018 1.0 18.0 12/18/2018 3.5 19.5 12/18/2018 1.0 18.7 12/18/2018 4.0 18.5 1/29/2019 1.0 19.0 1/29/2019 3.5 20.0 1/29/2019 1.0 19.5 1/29/2019 4.0 19.5 2/19/2019 1.0 19.0 2/19/2019 4.0 20.0 2/19/2019 1.0 19.5 2/19/2019 4.5 19.5 3/26/2019 1.0 18.0 3/26/2019 4.0 19.0 3/26/2019 1.0 18.5 3/26/2019 3.5 18.5 4/29/2019 1.0 19.0 4/29/2019 4.0 20.0 4/29/2019 1.0 19.5 4/29/2019 4.5 19.0 5/20/2019 1.0 20.5 5/20/2019 4.0 21.5 5/20/2019 1.0 21.0 5/20/2019 4.0 21.0 6/13/2019 1.0 20.5 6/13/2019 3.5 21.5 6/13/2019 1.0 21.0 6/13/2019 4.0 21.0 7/25/2019 1.0 18.5 7/25/2019 2.0 20.0 7/25/2019 1.0 19.0 7/25/2019 2.5 19.5 8/28/2019 1.0 19.0 8/28/2019 3.5 20.0 8/28/2019 1.0 19.0 8/28/2019 4.0 19.5 9/26/2019 1.0 19.0 9/26/2019 3.5 20.0 9/26/2019 1.0 19.0 9/26/2019 4.0 20.0 10/28/2019 1.0 20.0 10/28/2019 3.5 21.0 10/28/2019 1.0 20.0 10/28/2019 4.0 20.5 11/21/2019 1.0 17.5 11/21/2019 2.5 17.5 11/21/2019 1.0 16.5 11/21/2019 2.0 17.0 12/17/2019 1.0 21.0 12/17/2019 4.0 22.0 12/17/2019 1.0 21.0 12/17/2019 4.0 22.0 1/28/2020 1.0 21.0 1/28/2020 3.5 21.5 1/28/2020 1.0 21.0 1/28/2020 4.0 21.5 2/18/2020 1.0 22.0 2/18/2020 3.0 24.0 2/18/2020 -- -- 2/18/2020 2.5 21.5 3/24/2020 1.0 21.5 3/24/2020 3.0 23.0 3/24/2020 -- -- 3/24/2020 2.0 20.0 4/22/2020 1.0 19.5 4/22/2020 3.0 22.0 4/22/2020 -- -- 4/22/2020 1.5 19.0 6/3/2020 1.0 19.0 6/3/2020 2.0 20.0 6/3/2020 -- -- 6/3/2020 -- -- 6/25/2020 1.0 18.0 6/25/2020 2.5 19.0 6/25/2020 -- -- 6/25/2020 2.5 17.5 7/30/2020 1.0 21.0 7/30/2020 1.5 22.0 7/30/2020 -- -- 7/30/2020 2.5 21.0 8/26/2020 1.0 18.0 8/26/2020 1.0 17.5 8/26/2020 -- -- 8/26/2020 2.5 19.5 9/28/2020 1.0 15.0 9/28/2020 2.0 16.5 9/28/2020 -- -- 9/28/2020 2.0 17.0 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 1/25/2021 1.0 21.0 1/25/2021 -- -- 1/25/2021 -- -- 1/25/2021 1.5 21.0 2/24/2021 1.0 19.0 2/24/2021 -- -- 2/24/2021 -- -- 2/24/2021 2.0 19.5 3/24/2021 1.0 19.0 3/24/2021 -- -- 3/24/2021 -- -- 3/24/2021 2.1 19.0 4/29/2021 1.0 20.5 4/29/2021 -- -- 4/29/2021 -- -- 4/29/2021 1.5 20.0 5/25/2021 1.0 20.0 5/25/2021 -- -- 5/25/2021 -- -- 5/25/2021 2.0 19.5 6/23/2021 1.0 22.0 6/23/2021 -- -- 6/23/2021 -- -- 6/23/2021 2.0 21.5 Notes: Well with 0.0 SCFM is one with air flow turned on, but no breakthrough achieved in the well. Wells with 1.0 SCFM indicate at least minimal flow as the meter is broken. -- indicates the air is turned offFlow recorded in standard cubic feet per minute (scfm) Pressure recorded in pounds per square inch (PSI) bgs = below ground surface Flow meters at AS-1, AS-2R, AS-7, AS-8, and AS-9 changed from Erdco to Dwyer. Flow corrected to SCFM using conversion factor. Statesville, Iredell County, North Carolina 1237 West Front Street Former Coastal Mart No. 443 Air Sparge Well Data Table 8 AS-13 AS-14 AS-15 AS-16 2 2 2 2 Date Date Date 60 60 60 58-60 58-60 58-60 Date 75 73-75 WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Pressure Flow Pressure Flow Pressure Flow Pressure Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 7/21/2017 3.5 27.0 7/21/2017 3.5 26.0 7/21/2017 3.0 26.0 7/21/2017 4.5 6.0 10/5/2017 -- -- 10/5/2017 -- -- 10/5/2017 0.7 28.0 10/5/2017 1.0 24.5 10/6/2017 3.0 26.0 10/6/2017 3.0 23.5 10/6/2017 2.0 29.0 10/6/2017 1.0 25.5 2/12/2018 3.0 27.0 2/12/2018 4.5 26.0 2/12/2018 -- -- 2/12/2018 -- -- 2/13/2018 1.5 22.0 2/13/2018 4.5 23.0 2/13/2018 1.5 23.0 2/13/2018 1.5 19.5 3/1/2018 2.5 21.0 3/1/2018 4.5 21.0 3/1/2018 1.0 21.5 3/1/2018 2.5 18.0 3/7/2018 1.5 19.5 3/7/2018 2.0 16.0 3/7/2018 -- -- 3/7/2018 -- -- 4/25/2018 3.0 20.5 4/25/2018 3.0 19.0 4/25/2018 -- -- 4/25/2018 -- -- 5/30/2018 3.5 18.0 5/30/2018 4.0 17.0 5/30/2018 -- -- 5/30/2018 2.0 16.0 6/25/2018 2.5 20.0 6/25/2018 4.0 18.0 6/25/2018 1.0 20.0 6/25/2018 3.0 17.0 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 7/23/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 8/22/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 9/19/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 10/29/2018 -- -- 11/28/2018 3.5 20.5 11/28/2018 1.0 21.0 11/28/2018 1.0 21.0 11/28/2018 1.0 17.5 12/18/2018 4.0 18.3 12/18/2018 1.0 19.0 12/18/2018 1.0 18.0 12/18/2018 1.0 16.0 1/29/2019 4.0 19.2 1/29/2019 1.0 19.8 1/29/2019 1.0 18.0 1/29/2019 1.0 16.5 2/19/2019 4.0 19.0 2/19/2019 1.0 19.5 2/19/2019 1.0 18.5 2/19/2019 1.0 16.5 3/26/2019 4.0 18.0 3/26/2019 1.0 19.0 3/26/2019 1.0 18.0 3/26/2019 1.0 15.5 4/29/2019 4.5 19.0 4/29/2019 1.0 20.0 4/29/2019 1.0 19.0 4/29/2019 1.0 16.5 5/20/2019 4.5 20.5 5/20/2019 1.0 21.5 5/20/2019 1.0 19.5 5/20/2019 1.0 17.0 6/13/2019 4.5 20.5 6/13/2019 1.0 21.5 6/13/2019 1.0 20.0 6/13/2019 1.0 18.0 7/25/2019 2.0 19.0 7/25/2019 1.0 19.5 7/25/2019 1.0 19.0 7/25/2019 1.0 16.0 8/28/2019 2.5 19.0 8/28/2019 1.0 20.0 8/28/2019 1.0 18.0 8/28/2019 1.0 16.0 9/26/2019 3.0 19.0 9/26/2019 1.0 20.0 9/26/2019 1.0 17.5 9/26/2019 1.0 16.0 10/28/2019 3.5 20.0 10/28/2019 1.0 21.0 10/28/2019 1.0 18.5 10/28/2019 1.0 16.0 11/21/2019 1.5 16.5 11/21/2019 1.0 17.0 11/21/2019 1.0 16.5 11/21/2019 1.0 13.5 12/17/2019 3.5 21.0 12/17/2019 1.0 22.0 12/17/2019 1.0 18.5 12/17/2019 1.0 18.0 1/28/2020 3.5 21.0 1/28/2020 1.0 22.0 1/28/2020 1.0 18.0 1/28/2020 1.0 18.0 2/18/2020 2.5 21.0 2/18/2020 1.0 24.5 2/18/2020 -- -- 2/18/2020 -- -- 3/24/2020 2.0 20.0 3/24/2020 1.0 23.0 3/24/2020 -- -- 3/24/2020 -- -- 4/22/2020 2.5 19.0 4/22/2020 1.0 21.0 4/22/2020 -- -- 4/22/2020 -- -- 6/3/2020 -- -- 6/3/2020 -- -- 6/3/2020 -- -- 6/3/2020 -- -- 6/25/2020 2.5 18.0 6/25/2020 -- -- 6/25/2020 -- -- 6/25/2020 -- -- 7/30/2020 2.0 21.0 7/30/2020 -- 21.0 7/30/2020 -- -- 7/30/2020 -- -- 8/26/2020 2.0 20.0 8/26/2020 1.0 19.0 8/26/2020 -- -- 8/26/2020 -- -- 9/28/2020 2.0 19.0 9/28/2020 1.0 18.0 9/28/2020 -- -- 9/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 10/28/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 11/19/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 12/16/2020 -- -- 1/25/2021 -- -- 1/25/2021 -- -- 1/25/2021 -- -- 1/25/2021 -- -- 2/24/2021 -- -- 2/24/2021 -- -- 2/24/2021 -- -- 2/24/2021 -- -- 3/24/2021 -- -- 3/24/2021 -- -- 3/24/2021 -- -- 3/24/2021 -- -- 4/29/2021 -- -- 4/29/2021 -- -- 4/29/2021 -- -- 4/29/2021 -- -- 5/25/2021 -- -- 5/25/2021 -- -- 5/25/2021 -- -- 5/25/2021 -- -- 6/23/2021 -- -- 6/23/2021 -- -- 6/23/2021 -- -- 6/23/2021 -- -- Notes: Well with 0.0 SCFM is one with air flow turned on, but no breakthrough achieved in the well. Wells with 1.0 SCFM indicate at least minimal flow as the meter is broken. -- indicates the air is turned offFlow recorded in standard cubic feet per minute (scfm) Pressure recorded in pounds per square inch (PSI) bgs = below ground surface Flow meters at AS-1, AS-2R, AS-7, AS-8, and AS-9 changed from Erdco to Dwyer. Flow corrected to SCFM using conversion factor. Statesville, Iredell County, North Carolina 1237 West Front Street Former Coastal Mart No. 443 Air Sparge Well Data Table 8 AS-17 AS-18 AS-19 AS-20 2 2 2 Date Date Date Date 2 75 75 60 60 73-75 73-75 58-60 58-60 WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Pressure Mani-fold Mani-fold 7/21/2017 4.0 26.0 10/5/2017 1.0 28.0 10/6/2017 3.0 29.0 2/12/2018 -- -- 2/13/2018 3.0 23.0 3/1/2018 1.0 21.5 3/7/2018 -- -- 4/25/2018 -- -- 5/30/2018 1.0 20.0 6/25/2018 1.0 18.5 7/23/2018 -- -- 8/22/2018 -- -- 9/19/2018 -- -- 10/29/2018 -- -- 11/28/2018 1.0 20.5 12/18/2018 1.0 11.6 1/29/2019 1.0 16.5 2/19/2019 1.0 17.5 3/26/2019 1.0 17.0 4/29/2019 1.0 18.5 5/20/2019 1.0 18.5 6/13/2019 1.0 19.0 7/25/2019 1.0 18.0 8/28/2019 1.0 17.5 9/26/2019 1.0 17.0 10/28/2019 1.0 17.5 11/21/2019 1.0 16.0 12/17/2019 1.0 17.0 1/28/2020 1.0 16.0 2/18/2020 -- -- 3/24/2020 -- -- 4/22/2020 -- -- 6/3/2020 -- -- 6/25/2020 -- -- 7/30/2020 -- -- 8/26/2020 -- -- 9/28/2020 -- -- 10/28/2020 -- -- 11/19/2020 -- -- 12/16/2020 -- -- 1/25/2021 -- -- 2/24/2021 -- -- 3/24/2021 -- -- 4/29/2021 -- -- 5/25/2021 -- -- 6/23/2021 -- -- Notes: Well with 0.0 SCFM is one with air flow turned on, but no breakthrough achieved in the well. Wells with 1.0 SCFM indicate at least minimal flow as the meter is broken. -- indicates the air is turned offFlow recorded in standard cubic feet per minute (scfm) Pressure recorded in pounds per square inch (PSI) bgs = below ground surface Flow meters at AS-1, AS-2R, AS-7, AS-8, and AS-9 changed from Erdco to Dwyer. Flow corrected to SCFM using conversion factor. Statesville, Iredell County, North Carolina 1237 West Front Street Former Coastal Mart No. 443 Air Sparge Well Data Table 8 2 58-60 Date AS-21 60 WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Vacuum Flow Vacuum Flow Vacuum Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 6/19/2017 24 120 -- 6/19/2017 3 120 -- 6/19/2017 0 120 -- 7/21/2017 22 109 -- 7/21/2017 3 122 -- 7/21/2017 0 102 -- 8/3/2017 26 102 -- 8/3/2017 14 109 -- 8/3/2017 0 102 -- 8/11/2017 23 102 -- 8/11/2017 6 122 -- 8/11/2017 3 109 -- 10/5/2017 22 124 27.0 10/5/2017 6 125 470.0 10/5/2017 3 125 23.0 10/6/2017 23 125 14.0 10/6/2017 5 125 442.0 10/6/2017 <3 125 13.0 10/26/2017 24 122 -- 10/26/2017 7 136 -- 10/26/2017 4 122 -- 11/28/2017 -- 109 -- 11/28/2017 -- 122 -- 11/28/2017 -- 109 -- 2/12/2018 -- 125 -- 2/12/2018 12 126 -- 2/12/2018 <5 126 -- 3/1/2018 -- 116 -- 3/1/2018 -- 129 -- 3/1/2018 4 116 -- 4/25/2018 -- 133 113.3 4/25/2018 10.5 131 767.1 4/25/2018 3 130 41.3 5/30/2018 -- 129 80.1 5/30/2018 9.5 130 440.3 5/30/2018 3 130 111.7 6/25/2018 -- 130 111.0 6/25/2018 10 130 541.2 6/25/2018 22 129 152.8 7/23/2018 -- 124 29.1 7/23/2018 12 125 430.4 7/23/2018 23 124 78.5 8/22/2018 -- 124 10.2 8/22/2018 13 124 166.8 8/22/2018 24 123 14.6 9/19/2018 -- 122 -- 9/19/2018 12 129 -- 9/19/2018 22 116 -- 10/29/2018 -- 140 21.1 10/29/2018 18 141 208.2 10/29/2018 28 140 43.2 11/28/2018 -- 133 -- 11/28/2018 15 126 -- 11/28/2018 28 126 -- 12/18/2018 -- 118 -- 12/18/2018 16 129 -- 12/18/2018 28 120 -- 1/29/2019 -- 140 -- 1/29/2019 18 140 -- 1/29/2019 25 139 -- 2/19/2019 -- 142 -- 2/19/2019 20 143 -- 2/19/2019 25 142 -- 3/26/2019 -- 136 -- 3/26/2019 22 135 -- 3/26/2019 25 135 -- 4/29/2019 -- 127 136.7 4/29/2019 15 127 1453.0 4/29/2019 20 126 68.1 5/20/2019 -- 123 143.1 5/20/2019 14 123 247.0 5/20/2019 28 123 64.7 6/13/2019 -- 126 63.9 6/13/2019 15 126 172.7 6/13/2019 28 126 57.3 7/25/2019 -- 113 3.6 7/25/2019 -- 113 136.7 7/25/2019 20 113 9.2 8/28/2019 -- 114 18.8 8/28/2019 17 114 222.8 8/28/2019 23 114 25.7 9/26/2019 -- 113 27.2 9/26/2019 16 113 113.1 9/26/2019 30 112 22.6 10/28/2019 -- 116 11.1 10/28/2019 15 116 97.6 10/28/2019 18 116 10.4 12/17/2019 -- 128 -- 12/17/2019 -- 128 -- 12/17/2019 25 128 -- 1/28/2020 -- 126 -- 1/28/2020 -- 125 -- 1/28/2020 25 125 -- 2/18/2020 -- 130 -- 2/18/2020 -- 129 -- 2/18/2020 -- 129 -- 3/24/2020 -- 127 -- 3/24/2020 -- 127 -- 3/24/2020 -- 127 -- 4/22/2020 -- 98 115.3 4/22/2020 -- 98 163.5 4/22/2020 -- 98 27.7 6/3/2020 -- 116 -- 6/3/2020 -- 116 -- 6/3/2020 -- 115 -- 6/25/2020 -- -- 6/25/2020 -- -- 6/25/2020 -- -- 7/30/2020 -- 114 11.9 7/30/2020 -- 114 126.4 7/30/2020 -- 113 12.2 8/26/2020 -- 124 15.5 8/26/2020 -- 123 52.1 8/26/2020 -- 123 -- 9/28/2020 -- 130 17.9 9/28/2020 -- 130 78.1 9/28/2020 -- 129 -- 10/28/2020 -- 123 29.7 10/28/2020 -- 123 59.3 10/28/2020 -- 122 -- 11/19/2020 -- 128 101.2 11/19/2020 -- 128 -- 11/19/2020 -- 128 -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 4/29/2021 -- 124 2.6 4/29/2021 -- 124 3.5 4/29/2021 -- 124 -- 5/25/2021 -- 128 6.0 5/25/2021 -- 128 45.6 5/25/2021 -- 128 0.1 6/23/2021 -- 118 1.1 6/23/2021 -- 118 14.6 6/23/2021 -- 118 36.6 Notes: '-- = Not measured (broken meter/fluctuating readings/unable to measure) Flow recorded in standard cubic feet per minute (scfm)Vacuum recorded in inches of water (in. H2O) Photoionizaton Detector (PID) readings are in parts per million (ppm) bgs = below ground surface SVE-2 SVE-3 25-40 4 42 22-42 4 36 16-36 SVE-1 Statesville, Iredell County, North Carolina 1237 West Front Street PIDDate PID Date Former Coastal Mart No. 443 Date PID Table 9 Soil Vapor Extraction Well Data 4 40 WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Vacuum Flow Vacuum Flow Vacuum Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 6/19/2017 12 120 -- 6/19/2017 10 120 -- 6/19/2017 10 120 -- 7/21/2017 11 109 -- 7/21/2017 9 109 -- 7/21/2017 10 122 -- 8/3/2017 28 102 -- 8/3/2017 12 109 -- 8/3/2017 12 116 -- 8/11/2017 20 102 -- 8/11/2017 10 109 -- 8/11/2017 11 116 -- 10/5/2017 18 122 45.0 10/5/2017 11 122 1437.0 10/5/2017 13 122 952.0 10/6/2017 19 32.0 10/6/2017 12 124 1320.0 10/6/2017 14 124 788.0 10/26/2017 17 122 -- 10/26/2017 15 129 -- 10/26/2017 15 136 -- 11/28/2017 -- 116 -- 11/28/2017 -- 116 -- 11/28/2017 -- 116 -- 2/12/2018 21 124 -- 2/12/2018 15 125 -- 2/12/2018 -- 125 -- 3/1/2018 20 116 -- 3/1/2018 20 116 -- 3/1/2018 -- 109 -- 4/25/2018 25 127 134.8 4/25/2018 20 128 824.3 4/25/2018 -- 128 455.7 5/30/2018 -- 129 141.4 5/30/2018 -- 129 685.6 5/30/2018 -- 129 658.4 6/25/2018 -- 126 170.3 6/25/2018 -- 129 546.3 6/25/2018 -- 129 331.4 7/23/2018 -- 124 85.6 7/23/2018 -- 124 784.9 7/23/2018 -- 124 409.8 8/22/2018 -- 123 25.8 8/22/2018 -- 123 724.3 8/22/2018 -- 123 373.1 9/19/2018 26 82 -- 9/19/2018 19 122 -- 9/19/2018 -- 136 -- 10/29/2018 26 135 40.4 10/29/2018 -- 139 1022.0 10/29/2018 -- 139 373.6 11/28/2018 -- 122 -- 11/28/2018 25 128 -- 11/28/2018 -- 128 -- 12/18/2018 -- 103 -- 12/18/2018 22 143 -- 12/18/2018 -- 150 -- 1/29/2019 -- 134 -- 1/29/2019 -- 139 -- 1/29/2019 -- 139 -- 2/19/2019 -- 137 -- 2/19/2019 25 143 -- 2/19/2019 -- 141 -- 3/26/2019 -- 130 -- 3/26/2019 24 135 -- 3/26/2019 -- 134 -- 4/29/2019 -- 123 91.7 4/29/2019 -- 126 3961.0 4/29/2019 -- 125 1032.0 5/20/2019 -- 120 90.6 5/20/2019 -- 122 642.2 5/20/2019 -- 122 437.3 6/13/2019 -- 123 41.8 6/13/2019 -- 125 452.8 6/13/2019 -- 125 264.4 7/25/2019 -- 110 10.1 7/25/2019 -- 112 687.3 7/25/2019 -- 110 76.0 8/28/2019 -- 111 27.9 8/28/2019 -- 114 607.3 8/28/2019 -- 113 156.5 9/26/2019 -- 109 23.1 9/26/2019 -- 112 437.5 9/26/2019 -- 112 114.9 10/28/2019 -- 113 9.5 10/28/2019 -- 116 402.5 10/28/2019 -- 115 100.5 12/17/2019 -- 126 -- 12/17/2019 24 128 -- 12/17/2019 -- 128 -- 1/28/2020 -- 121 -- 1/28/2020 -- 125 -- 1/28/2020 -- 124 -- 2/18/2020 -- 126 -- 2/18/2020 -- 129 -- 2/18/2020 -- 129 -- 3/24/2020 -- 123 -- 3/24/2020 -- 126 -- 3/24/2020 -- 126 -- 4/22/2020 -- 96 80.1 4/22/2020 -- 98 581.3 4/22/2020 -- 98 160.2 6/3/2020 -- 111 -- 6/3/2020 -- 115 -- 6/3/2020 -- 115 -- 6/25/2020 -- -- 6/25/2020 -- -- 6/25/2020 -- 115 -- 7/30/2020 -- 109 14.5 7/30/2020 -- 113 557.3 7/30/2020 -- 112 134.9 8/26/2020 -- 120 -- 8/26/2020 -- 123 234.5 8/26/2020 -- 122 100.5 9/28/2020 -- 127 -- 9/28/2020 -- 129 343.7 9/28/2020 -- 129 167.2 10/28/2020 -- 118 -- 10/28/2020 -- 122 639.6 10/28/2020 -- 122 55.4 11/19/2020 -- 124 -- 11/19/2020 -- 127 515.6 11/19/2020 -- 127 -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 4/29/2021 -- 120 -- 4/29/2021 -- 123 80.9 4/29/2021 -- 123 1.9 5/25/2021 -- 125 -- 5/25/2021 -- 125 236.3 5/25/2021 -- 121 106.7 6/23/2021 -- 114 -- 6/23/2021 -- 117 172.1 6/23/2021 -- 117 55.0 Notes: -- indicates the well is turned off Flow recorded in standard cubic feet per minute (scfm)Vacuum recorded in inches of water (in. H2O) PID readings are in parts per million (ppm) bgs = below ground surface SVE-5 SVE-6SVE-4 4 35 15-35 4 35 15-35 4 39 19-39 Statesville, Iredell County, North Carolina 1237 West Front Street Former Coastal Mart No. 443 Date PID Table 9 Soil Vapor Extraction Well Data Date PID Date PID WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Vacuum Flow Vacuum Flow Vacuum Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 6/19/2017 26 113 -- 6/19/2017 24 117 -- 6/19/2017 28 61 -- 7/21/2017 24 102 -- 7/21/2017 22 109 -- 7/21/2017 27 54 -- 8/3/2017 25 54 -- 8/3/2017 22 116 -- 8/3/2017 27 54 -- 8/11/2017 22 68 -- 8/11/2017 24 109 -- 8/11/2017 27 61 -- 10/5/2017 26 82 335.0 10/5/2017 25 118 385.0 10/5/2017 25 77 28.0 10/6/2017 27 80 488.0 10/6/2017 25 122 432.0 10/6/2017 26 79 91.0 10/26/2017 25 95 -- 10/26/2017 29 136 -- 10/26/2017 28 82 -- 11/28/2017 -- 95 -- 11/28/2017 -- 129 -- 11/28/2017 -- 75 -- 2/12/2018 32 123 -- 2/12/2018 -- 120 -- 2/12/2018 32 129 -- 3/1/2018 30 116 -- 3/1/2018 -- 122 -- 3/1/2018 -- 116 -- 4/25/2018 -- 125 400.0 4/25/2018 -- 127 389.5 4/25/2018 >30 127 38.6 5/30/2018 -- 127 398.4 5/30/2018 -- 127 315.7 5/30/2018 >30 127 98.3 6/25/2018 30 128 222.8 6/25/2018 -- 128 150.5 6/25/2018 >30 128 15.2 7/23/2018 -- 122 276.7 7/23/2018 -- 122 183.2 7/23/2018 30 122 72.6 8/22/2018 -- 122 168.3 8/22/2018 -- 122 126.7 8/22/2018 >30 122 42.7 9/19/2018 -- 129 -- 9/19/2018 -- 136 -- 9/19/2018 -- 109 -- 10/29/2018 -- 138 143.3 10/29/2018 -- 138 136.2 10/29/2018 -- 138 74.4 11/28/2018 -- 129 -- 11/28/2018 -- 130 -- 11/28/2018 -- 129 -- 12/18/2018 -- 144 -- 12/18/2018 -- 147 -- 12/18/2018 -- 136 -- 1/29/2019 -- 137 -- 1/29/2019 -- 139 -- 1/29/2019 -- 139 -- 2/19/2019 -- 140 -- 2/19/2019 -- 141 -- 2/19/2019 -- 142 -- 3/26/2019 -- 133 -- 3/26/2019 -- 133 -- 3/26/2019 -- 134 -- 4/29/2019 -- 124 118.7 4/29/2019 -- 124 82.0 4/29/2019 -- 125 34.5 5/20/2019 -- 120 91.9 5/20/2019 -- 121 74.5 5/20/2019 -- 121 7.3 6/13/2019 -- 123 65.7 6/13/2019 -- 124 18.2 6/13/2019 -- 125 16.2 7/25/2019 -- 111 19.9 7/25/2019 -- 111 12.1 7/25/2019 -- 112 5.3 8/28/2019 -- 112 54.9 8/28/2019 -- 112 23.2 8/28/2019 -- 113 22.0 9/26/2019 -- 110 24.4 9/26/2019 -- 110 13.1 9/26/2019 -- 110 2.7 10/28/2019 -- 114 8.2 10/28/2019 -- 114 4.4 10/28/2019 -- 114 2.9 12/17/2019 -- 126 -- 12/17/2019 -- 126 -- 12/17/2019 -- 126 -- 1/28/2020 -- 123 -- 1/28/2020 -- 123 -- 1/28/2020 -- 122 -- 2/18/2020 -- 128 -- 2/18/2020 -- 128 -- 2/18/2020 -- 128 -- 3/24/2020 -- 124 -- 3/24/2020 -- 125 -- 3/24/2020 -- 124 -- 4/22/2020 -- 96 24.3 4/22/2020 -- 96 15.6 4/22/2020 -- 96 3.9 6/3/2020 -- 114 -- 6/3/2020 -- 114 -- 6/3/2020 -- 113 -- 6/25/2020 -- -- 6/25/2020 -- -- 6/25/2020 -- -- 7/30/2020 -- 111 55.1 7/30/2020 -- 111 31.7 7/30/2020 -- 111 10.8 8/26/2020 -- 121 72.8 8/26/2020 -- 128 16.4 8/26/2020 -- 118 -- 9/28/2020 -- 128 103.7 9/28/2020 -- 130 279.0 9/28/2020 -- 130 -- 10/28/2020 -- 120 31.7 10/28/2020 -- 120 63.2 10/28/2020 -- 120 -- 11/19/2020 -- 126 -- 11/19/2020 -- 125 -- 11/19/2020 -- 125 -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 4/29/2021 -- 122 4.0 4/29/2021 -- 122 59.9 4/29/2021 -- 121 -- 5/25/2021 -- 125 71.8 5/25/2021 -- 125 237.5 5/25/2021 -- 125 -- 6/23/2021 -- 116 50.6 6/23/2021 -- 116 406.5 6/23/2021 -- 115 -- Notes: -- indicates the well is turned off Flow recorded in standard cubic feet per minute (scfm)Vacuum recorded in inches of water (in. H2O) PID readings are in parts per million (ppm) bgs = below ground surface SVE-9SVE-8SVE-7 4 35 15-35 4 35 15-35 4 35 15-35 Soil Vapor Extraction Well Data Statesville, Iredell County, North Carolina 1237 West Front Street Table 9 Former Coastal Mart No. 443 Date PIDDate PID Date PID WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Vacuum Flow Vacuum Flow Vacuum Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold Mani-fold 6/19/2017 19 120 -- 6/19/2017 22 120 -- 6/19/2017 18 120 -- 7/21/2017 18 109 -- 7/21/2017 17 109 -- 7/21/2017 24 157 -- 8/3/2017 19 109 -- 8/3/2017 18 102 -- 8/3/2017 26 150 -- 8/11/2017 19 116 -- 8/11/2017 18 109 -- 8/11/2017 25 143 -- 10/5/2017 20 121 27.0 10/5/2017 18 123 96.0 10/5/2017 25 109 6.5 10/6/2017 21 124 49.0 10/6/2017 17 124 134.0 10/6/2017 25 110 52.0 10/26/2017 24 136 -- 10/26/2017 18 129 -- 10/26/2017 26 163 -- 11/28/2017 -- 116 -- 11/28/2017 -- 88 -- 11/28/2017 -- 136 -- 2/12/2018 -- 124 -- 2/12/2018 -- 124 -- 2/12/2018 29 113 -- 3/1/2018 22 129 -- 3/1/2018 -- 122 -- 3/1/2018 30 129 -- 4/25/2018 -- 127 31.2 4/25/2018 -- 128 49.5 4/25/2018 -- 124 19.6 5/30/2018 -- 128 93.5 5/30/2018 -- 126 86.3 5/30/2018 -- 125 56.0 6/25/2018 -- 128 20.1 6/25/2018 -- 126 24.7 6/25/2018 -- 123 8.3 7/23/2018 -- 122 52.9 7/23/2018 -- 123 54.0 7/23/2018 -- 119 29.1 8/22/2018 -- 122 32.0 8/22/2018 -- 122 16.9 8/22/2018 -- 118 5.6 9/19/2018 -- 129 -- 9/19/2018 -- 129 -- 9/19/2018 -- 170 -- 10/29/2018 -- 138 48.3 10/29/2018 -- 139 52.6 10/29/2018 -- 134 18.7 11/28/2018 -- 129 -- 11/28/2018 -- 125 -- 11/28/2018 -- 123 -- 12/18/2018 -- 128 -- 12/18/2018 -- 144 -- 12/18/2018 -- 186 -- 1/29/2019 -- 139 -- 1/29/2019 -- 140 -- 1/29/2019 -- 134 -- 2/19/2019 -- 141 -- 2/19/2019 -- 142 -- 2/19/2019 -- 136 -- 3/26/2019 -- 133 -- 3/26/2019 -- 134 -- 3/26/2019 -- 129 -- 4/29/2019 -- 124 20.6 4/29/2019 -- 125 18.8 4/29/2019 -- 121 13.8 5/20/2019 -- 120 7.4 5/20/2019 -- 121 9.3 5/20/2019 -- 117 8.5 6/13/2019 -- 124 10.7 6/13/2019 -- 125 16.3 6/13/2019 -- 120 11.3 7/25/2019 -- 110 4.9 7/25/2019 -- 111 9.7 7/25/2019 -- 106 3.4 8/28/2019 -- 112 17.9 8/28/2019 -- 112 14.3 8/28/2019 -- 107 12.8 9/26/2019 -- 110 2.3 9/26/2019 -- 111 3.7 9/26/2019 -- 106 2.0 10/28/2019 -- 114 1.3 10/28/2019 -- 115 3.0 10/28/2019 -- 109 0.5 12/17/2019 -- 126 -- 12/17/2019 -- 127 -- 12/17/2019 -- 123 -- 1/28/2020 -- 123 -- 1/28/2020 -- 124 -- 1/28/2020 -- 119 -- 2/18/2020 -- 127 -- 2/18/2020 -- 129 -- 2/18/2020 -- 124 -- 3/24/2020 -- 124 -- 3/24/2020 -- 125 -- 3/24/2020 -- 120 -- 4/22/2020 -- 96 1.7 4/22/2020 -- 97 5.6 4/22/2020 -- 93 1.5 6/3/2020 -- 114 -- 6/3/2020 -- 114 -- 6/3/2020 -- 110 -- 6/25/2020 -- -- 6/25/2020 -- -- 6/25/2020 -- -- 7/30/2020 -- 111 7.1 7/30/2020 -- 112 5.8 7/30/2020 -- 106 4.7 8/26/2020 -- 118 -- 8/26/2020 -- 118 -- 8/26/2020 -- 113 -- 9/28/2020 -- 131 -- 9/28/2020 -- 131 -- 9/28/2020 -- 126 -- 10/28/2020 -- 120 -- 10/28/2020 -- 121 -- 10/28/2020 -- 115 -- 11/19/2020 -- 125 -- 11/19/2020 -- 126 -- 11/19/2020 -- 119 -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 4/29/2021 -- 121 -- 4/29/2021 -- 122 -- 4/29/2021 -- 116 -- 5/25/2021 -- 126 -- 5/25/2021 -- 126 -- 5/25/2021 -- 119 -- 6/23/2021 -- 115 221.4 6/23/2021 -- 116 -- 6/23/2021 -- 110 -- Notes: -- indicates the well is turned off Flow recorded in standard cubic feet per minute (scfm)Vacuum recorded in inches of water (in. H2O) PID readings are in parts per million (ppm) bgs = below ground surface SVE-11 4 35 15-35 4 35 15-35 4 35 15-35 SVE-10 SVE-12 Soil Vapor Extraction Well Data Statesville, Iredell County, North Carolina 1237 West Front Street Table 9 Former Coastal Mart No. 443 Date PID Date PID Date PID WELL NUMBER DIAMETER (inches) WELL DEPTH (feet bgs) SCREEN INTERVAL (feet bgs) Flow Vacuum Flow Vacuum Mani-fold Mani-fold Mani-fold Mani-fold 6/19/2017 25 120 -- 6/19/2017 26 114 -- 7/21/2017 20 82 -- 7/21/2017 26 82 -- 8/3/2017 21 75 -- 8/3/2017 24 82 -- 8/11/2017 21 109 -- 8/11/2017 21 82 -- 10/5/2017 23 123 6.0 10/5/2017 20 124 9.0 10/6/2017 23 124 14.0 10/6/2017 22 124 37.0 10/26/2017 24 95 -- 10/26/2017 23 102 -- 11/28/2017 -- 102 -- 11/28/2017 -- 68 -- 2/12/2018 26 125 -- 2/12/2018 -- 125 -- 3/1/2018 26 95 -- 3/1/2018 -- 68 -- 4/25/2018 28.5 125 83.3 4/25/2018 -- 125 48.6 5/30/2018 28 129 88.2 5/30/2018 -- 129 58.9 6/25/2018 29 126 13.1 6/25/2018 -- 126 34.5 7/23/2018 30 124 31.2 7/23/2018 -- 124 39.1 8/22/2018 30 123 17.5 8/22/2018 -- 123 25.6 9/19/2018 29 95 -- 9/19/2018 -- 109 -- 10/29/2018 29 139 22.2 10/29/2018 -- 139 47.1 11/28/2018 30 119 -- 11/28/2018 -- 120 -- 12/18/2018 30 82 -- 12/18/2018 -- 95 -- 1/29/2019 30 107 -- 1/29/2019 -- 138 -- 2/19/2019 30 111 -- 2/19/2019 -- 142 -- 3/26/2019 29 105 -- 3/26/2019 -- 134 -- 4/29/2019 27 121 16.5 4/29/2019 -- 124 65.7 5/20/2019 30 118 24.7 5/20/2019 -- 122 63.7 6/13/2019 30 122 20.7 6/13/2019 -- 126 49.1 7/25/2019 30 109 3.9 7/25/2019 -- 112 5.8 8/28/2019 30 109 19.8 8/28/2019 -- 113 42.5 9/26/2019 30 108 4.0 9/26/2019 -- 111 7.6 10/28/2019 30 112 0.9 10/28/2019 -- 115 4.8 12/17/2019 30 125 -- 12/17/2019 -- 127 -- 1/28/2020 28 122 -- 1/28/2020 -- 124 -- 2/18/2020 30 127 -- 2/18/2020 -- 129 -- 3/24/2020 30 123 -- 3/24/2020 -- 126 -- 4/22/2020 -- 96 8.6 4/22/2020 -- 98 25.6 6/3/2020 -- 112 -- 6/3/2020 -- 115 -- 6/25/2020 30 -- 6/25/2020 -- -- 7/30/2020 30 109 4.5 7/30/2020 -- 113 6.7 8/26/2020 30 116 -- 8/26/2020 -- 119 -- 9/28/2020 30 128 -- 9/28/2020 -- 133 -- 10/28/2020 29 118 -- 10/28/2020 -- 122 -- 11/19/2020 29 123 -- 11/19/2020 -- 127 -- 12/16/2020 -- -- -- 12/16/2020 -- -- -- 1/25/2021 -- -- -- 1/25/2021 -- -- -- 2/24/2021 -- -- -- 2/24/2021 -- -- -- 3/24/2021 -- -- -- 3/24/2021 -- -- -- 4/29/2021 -- 120 -- 4/29/2021 -- 123 -- 5/25/2021 -- 123 -- 5/25/2021 -- 127 -- 6/23/2021 -- 113 -- 6/23/2021 -- 117 -- Notes: -- indicates the well is turned off Flow recorded in standard cubic feet per minute (scfm)Vacuum recorded in inches of water (in. H2O) PID readings are in parts per million (ppm) bgs = below ground surface 35 15-35 44 35 15-35 Table 9 Soil Vapor Extraction Well Data Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina SVE-13 SVE-14 Date PID Date PID Sample Hour Effluent Airflow PID Ethyl Total Total Emission Emission Mass of TPH Mass of Benzene Cumulative Total Mass Cumulative Total Mass Additional Notes Location Date Meter Rate (scfm) (ppm) Benzene Toluene Benzene Xylenes BTEX TPH Rate - TPH (lbs/day) Rate - benzene (lbs/day)Removed (lbs) Removed (lbs)Removed - TPH(lbs) Removed - benzene (lbs) 6/19/2017 14967 315 971 115.0 269.0 <23.4 63.1 447 9,200 261 3.26 SVE influent conc = SVE effluent conc as carbon drums were bypassed. 8/11/2017 15507 400 NM 18.0 100.0 16.0 67.0 201 23,000 827 0.65 --12230 43.9 12229.5 43.9 8/24/2017 15820 380 NM 0.0 0.3 0.0 0.2 0.60 21 0.72 0.00 --5400 4.2 17629.5 48.1 9/18/2017 16347 380 NM NS NS NS NS NS NS NA NA --NA NA NA NA 9/28/2017 16558 390 NM 9.3 44.0 7.0 26.0 86 7,400 259 0.33 --2281 2.9 19910.4 51.0 SVE influent conc = SVE effluent conc as the carbon drums were offline. 10/5/2017 16724 380 330 12.0 80.0 22.0 93.0 207 12,000 410 0.41 --2304 2.5 22214.3 53.5 Only SVE on. SVE influent conc = SVE effluent conc as carbon drums were bypassed. 10/5/2017 16729 380 309 11.0 71.0 20.0 85.0 187 12,000 410 0.38 --85 0.1 22299.7 53.6 SVE and AS on. SVE influent conc = SVE effluent conc as carbon drums were bypassed. 10/9/2017 16819 390 NM NS NS NS NS NS NS NA NA --NA NA NA NA 10/17/2017 17010 410 NM NS NS NS NS NS NS NA NA --NA NA NA NA 10/26/2017 17229 390 NM NS NS NS NS NS NS NA NA --NA NA NA NA 11/28/2017 17938 390 510 3.3 25.0 6.9 30.0 65.2 5,300 186 0.12 --5489 3.4 27788.8 57.0 SVE influent conc = SVE effluent conc as the saturated carbon drums were offline. 12/20/2017 18468 400 383 3.0 28.0 9.2 46.0 86.2 5,700 205 0.11 --4318 2.5 32106.6 59.5 SVE influent conc = SVE effluent conc as the saturated carbon drums were offline. 4/25/2018 20034 325 328 16.0 46.0 7.4 30.0 99.4 10,000 292 0.47 --16217 18.8 48323.8 78.3 5/30/2018 20694 340 337 9.5 22.0 2.8 11.0 45.3 3,500 107 0.29 --5488 10.4 53811.7 88.7 6/25/2018 21198 340 357 20.0 57.0 9.6 45.0 131.6 9,800 300 0.61 --4272 9.5 58083.9 98.2 7/23/2018 21744 340 387 4.3 14.0 2.6 12.0 32.9 3,000 92 0.13 --4447 8.4 62531.3 106.6 8/22/2018 22298 350 76 1.2 3.8 0.6 2.5 8.1 750 24 0.04 --1331 2.0 63861.9 108.6 9/19/2018 22817 350 1.2 3.8 0.6 2.5 8.1 750 24 0.04 -- 510 0.8 64372.0 109.4 As SVE air samples were not collected on 9/19/2018, the analytical values are taken to be the same as 8/22/2018; because the AS system was off on 8/22/2018 and 9/19/2018. 10/29/2018 23,731 320 265 0.8 3.9 1.0 5.0 10.7 890 26 0.02 --937 1.1 65309.2 110.5 11/28/2018 24,225 330 303 7.0 20.0 4.2 20.0 51.2 2,800 83 0.21 --1119 2.4 66428.1 112.9 12/18/2018 24,700 310 190 8.7 19.0 4.0 18.0 49.7 3,300 92 0.24 --1731 4.5 68158.9 117.3 1/29/2019 25,199 320 199 3.9 4.4 0.4 1.9 10.6 1,300 37 0.11 --1346 3.7 69504.6 121.0 2/19/2019 25,699 330 291 7.4 18.0 2.8 13.0 41.2 2,900 86 0.22 --1285 3.5 70789.7 124.5 3/26/2019 26,539 320 327 8.6 17.0 2.1 10.0 37.7 2,500 72 0.25 --2764 8.2 73554.1 132.6 4/29/2019 27,356 350 182 5.7 13.0 1.9 9.4 30.0 170 5.3 0.18 --1316 7.3 74870.1 139.9 5/20/2019 27,855 340 229 5.2 12.0 1.8 8.2 27.2 2,100 64.2 0.16 --723 3.5 75592.8 143.4 6/13/2019 28,432 340 291 4.0 6.5 0.6 2.3 13.4 1,700 52.0 0.12 --1396 3.4 76988.9 146.8 7/25/2019 28,646 350 79 3.7 12.0 2.3 12.0 30.0 2,600 81.8 0.12 --598 1.1 77586.4 147.9 8/28/2019 29,403 325 101 1.2 4.4 1.0 4.7 11.3 700 20.5 0.04 --1612 2.4 79198.0 150.2 9/26/2019 30,098 340 68 1.1 2.6 0.2 0.7 4.6 690 21.1 0.03 --602 1.0 79799.9 151.2 10/28/2019 30,817 350 41 3.4 11.0 1.5 7.0 22.9 2,800 88.1 0.11 --1636 2.1 81435.6 153.3 11/21/2019 31,357 350 107 4.1 18.0 3.2 17.0 42.3 1,900 59.8 0.13 --1664 2.7 83100.0 156.0 12/17/2019 31,979 340 NM 1.6 6.8 1.8 8.5 18.7 1,400 42.8 0.05 --1328 2.3 84428.2 158.3 1/28/2020 32,431 330 42 1.0 4.4 0.6 2.5 8.5 610 18.1 0.03 --573 0.7 85001.4 159.0 2/18/2020 32,935 350 37 0.8 2.2 0.3 1.4 4.7 450 14.2 0.03 --339 0.6 85340.1 159.6 3/24/2020 33,775 350 76 2.1 7.4 1.2 5.3 16.0 1,800 56.6 0.07 --1240 1.6 86579.7 161.2 4/22/2020 34,391 330 272 1.9 7.8 1.4 6.7 17.8 1,400 41.5 0.06 --1260 1.6 87839.9 162.8 6/3/2020 35,346 330 NM 2.1 7.2 1.1 4.5 14.9 1,300 38.6 0.06 --1594 2.4 89434.1 165.1 6/25/2020 35,865 350 150 1.8 6.4 1.3 5.8 15.3 1,000 31.5 0.06 --757 1.3 90190.8 166.4 7/30/2020 36,109 370 55 0.6 3.2 0.5 2.4 6.8 480 16.0 0.02 --241 0.4 90432.2 166.8 8/26/2020 36,758 360 52 0.5 2.4 0.4 1.7 5.0 1,200 38.8 0.02 --740 0.5 91172.6 167.3 9/28/2020 37,550 360 73 0.4 1.9 0.4 1.6 4.2 2,900 93.9 0.01 --2191 0.5 93363.5 167.8 10/28/2020 37,882 370 111 0.7 2.5 0.3 1.3 4.9 2,900 96.5 0.02 --1315 0.3 94678.8 168.0 The AS system is off, as waiting for air compressor replacement 11/19/2020 38,321 370 219 0.5 2.1 0.4 1.8 4.7 2,900 96.5 0.01 --1766 0.4 96445.0 168.4 The AS system is off, as waiting for air compressor replacement 1/25/2021 39,232 360 37 0.2 0.9 0.2 1.1 2.3 1,400 45.3 0.01 --2690 0.4 99135.0 168.8 New AS compressor installed the AS system restarted. 2/24/2021 39,952 350 40 0.4 1.7 0.3 1.3 3.7 370 11.6 0.01 --855 0.3 99989.8 169.0 3/24/2021 40,620 360 39 0.5 1.4 0.2 0.7 2.8 3,700 119.8 0.02 --1827 0.4 101816.7 169.4 4/29/2021 41,311 360 47 0.5 2.2 0.4 2.2 5.4 5,500 178.0 0.02 --4285 0.5 106102.1 169.9 5/25/2021 41,934 360 49 0.4 1.5 0.2 1.0 3.1 2,100 68.0 0.01 --3192 0.4 109294.2 170.3 6/23/2021 42,604 380 111 1.3 4.4 0.5 2.5 8.7 22,000 751.6 0.04 --11448 0.8 120742.7 171.1 SVE Influent Table 10 Vapor Treatment System Analytical Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina Sample Hour Effluent Airflow PID Ethyl Total Total Emission Emission Mass of TPH Mass of Benzene Cumulative Total Mass Cumulative Total Mass Additional Notes Location Date Meter Rate (scfm) (ppm) Benzene Toluene Benzene Xylenes BTEX TPH Rate - TPH (lbs/day) Rate - benzene (lbs/day)Removed (lbs) Removed (lbs)Removed - TPH(lbs) Removed - benzene (lbs) Table 10 Vapor Treatment System Analytical Summary Former Coastal Mart No. 443 1237 West Front Street Statesville, Iredell County, North Carolina 6/19/2017 14967 315 971 115.0 269.0 <23.4 63.1 447 9,200 261 --0.00 ------SVE influent conc = SVE effluent conc as carbon drums were bypassed. 8/11/2017 15507 400 NM 14.0 59.0 9.1 41.0 123 13,000 468 --359.62 ----4043.5 -- 8/24/2017 15820 380 NM 0.0 0.3 0.1 0.4 0.74 47 1.61 ---0.89 ----6383.5 --Breakthrough in first set of carbon drums. 9/18/2017 16347 380 NM 12.0 78.0 17.0 92.0 199 12,000 410 --NA ------ 9/28/2017 16558 390 NM 9.3 44.0 7.0 26.0 86 7,400 259 --0.00 ------SVE influent conc = SVE effluent conc as the carbon drums were offline. 10/5/2017 16724 380 330 12.0 80.0 22.0 93.0 207 12,000 410 --0.00 ----0.0 --Only SVE on. SVE influent conc = SVE effluent conc as carbon drums were bypassed. 10/5/2017 16729 380 309 11.0 71.0 20.0 85.0 187 12,000 410 --0.00 ----0.0 --SVE and AS on. SVE influent conc = SVE effluent conc as carbon drums were bypassed. 10/9/2017 16819 390 NM 11.0 81.0 25.0 110.0 227 14,000 491 --NA ----0.0 -- 10/17/2017 17010 410 NM 7.5 44.0 11.0 44.0 107 6,900 254 --NA ----0.0 -- 10/26/2017 17229 390 NM 8.0 52.0 16.0 68.0 144 9,400 330 --NA ----0.0 -- 11/28/2017 17938 390 510 3.3 25.0 6.9 30.0 65.2 5,300 186 --0.00 ----0.0 --SVE influent conc = SVE effluent conc as the saturated carbon drums were offline. 12/20/2017 18468 400 383 3.0 28.0 9.2 46.0 86.2 5,700 205 --0.00 ----0.0 --SVE influent conc = SVE effluent conc as the saturated carbon drums were offline. 4/25/2018 20034 325 51 3.8 4.5 0.4 1.6 10.3 2,000 58 --233.75 ----7624.8 -- 5/30/2018 20694 340 46 3.2 2.9 0.2 0.6 6.9 980 30 --77.03 ----11897.4 -- 6/25/2018 21198 340 57 4.6 5.1 0.4 1.5 11.6 1,900 58 --241.49 ----15244.5 -- 7/23/2018 21744 340 48 2.6 4.2 0.4 1.8 9.0 1,500 46 --45.85 ----18510.6 -- 8/22/2018 22298 350 35 0.6 1.0 0.1 0.5 2.2 310 10 --13.85 ----19199.4 -- 9/19/2018 22817 350 0.6 1.0 0.1 0.5 2.2 310 10 -- 13.85 -- -- 19498.7 -- As SVE air samples were not collected on 9/19/2018, the analytical values are taken to be the same as 8/22/2018; because the AS system was off on 8/22/2018 and 9/19/2018. 10/29/2018 23,731 320 34 0.5 1.2 0.2 1.0 2.9 460 13 --12.37 ----19998.0 -- 11/28/2018 24,225 330 45 2.4 3.6 0.5 2.1 8.6 950 28 --54.89 ----20690.5 -- 12/18/2018 24,700 310 34 1.3 1.3 0.1 0.6 3.3 480 13 --78.60 ----22010.3 -- 1/29/2019 25,199 320 12 0.5 0.2 0.02 0.1 0.8 210 6 --31.36 ----23154.1 -- 2/19/2019 25,699 330 18 1.0 0.5 0.05 0.2 1.8 370 11 --75.06 ----24262.0 -- 3/26/2019 26,539 320 105 0.9 0.3 <0.017 0.1 1.304 270 8 --64.16 ----26698.3 -- 4/29/2019 27,356 350 10 0.5 0.2 0.01 0.04 0.679 160 5.0 --0.31 ----27796.3 -- 5/20/2019 27,855 340 16 0.8 0.4 0.04 0.2 1.419 290 8.9 --55.33 ----28374.5 -- 6/13/2019 28,432 340 81 0.4 0.1 0.01 0.03 0.569 210 6.4 --45.55 ----29586.9 -- 7/25/2019 28,646 350 0.8 0.3 0.2 0.02 0.10 0.589 190 6.0 --75.84 ----30129.1 -- 8/28/2019 29,403 325 3.2 0.1 0.1 0.02 0.08 0.311 49 1.4 --19.02 ----31623.9 -- 9/26/2019 30,098 340 1.3 0.1 0.1 0.01 0.03 0.219 120 3.7 --17.42 ----32151.9 -- 10/28/2019 30,817 350 1.7 0.3 0.2 0.02 0.03 0.518 470 14.8 --73.32 ----33511.1 -- 11/21/2019 31,357 350 5.1 0.3 0.2 0.02 0.01 0.509 120 3.8 --56.01 ----34966.6 -- 12/17/2019 31,979 340 NM 0.2 0.2 0.03 0.12 0.495 170 5.2 --37.60 ----36178.6 -- 1/28/2020 32,431 330 1.6 0.1 0.1 0.01 0.04 0.208 68 2.0 --16.08 ----36683.9 -- 2/18/2020 32,935 350 2.1 0.1 0.1 0.01 0.03 0.183 69 2.2 --11.99 ----36978.7 -- 3/24/2020 33,775 350 1.8 0.1 0.1 0.01 0.04 0.285 730 23.0 --33.67 ----37778.1 -- 4/22/2020 34,391 330 77.4 0.1 0.2 0.03 0.14 0.458 80 2.4 --39.16 ----38712.9 -- 6/3/2020 35,346 330 NM 0.1 0.1 0.03 0.17 0.377 79 2.3 --36.23 ----40213.3 -- 6/25/2020 35,865 350 1.8 0.1 0.1 0.02 0.08 0.341 74 2.3 --29.14 ----40919.5 -- 7/30/2020 36,109 370 0.2 0.0 0.1 0.01 0.04 0.171 47 1.6 --14.40 ----41141.0 -- 8/26/2020 36,758 360 3.1 0.0 0.0 0.00 0.01 0.068 150 4.9 --33.98 ----41794.8 -- 9/28/2020 37,550 360 2.7 0.0 0.0 0.00 0.00 0.038 770 24.9 --68.94 ----43494.1 -- 10/28/2020 37,882 370 10.8 0.0 0.0 0.01 0.00 0.034 780 25.9 --70.52 ----44457.8 --The AS system is off, as waiting for air compressor replacement 11/19/2020 38,321 370 27.3 0.0 0.0 0.01 0.00 0.035 1,000 33.3 --63.20 ----45681.9 --The AS system is off, as waiting for air compressor replacement 12/16/2020 38,970 360 8.4 0.0 0.0 0.00 0.00 0.013 490 15.9 --NA ----NA --The AS system is off, as waiting for air compressor replacement 1/25/2021 39,232 360 3.4 0.0 0.0 0.02 0.09 0.150 270 8.7 --36.57 ----47575.0 --New AS compressor installed the AS system restarted. 2/24/2021 39,952 350 2.5 0.0 0.0 0.01 0.01 0.049 25 0.8 --10.86 ----48286.8 -- 3/24/2021 40,620 360 6.6 0.0 0.0 0.00 0.01 0.042 250 8.1 --111.66 ----49990.4 -- 4/29/2021 41,311 360 2.1 0.0 0.0 0.00 0.01 0.028 750 24.3 --153.74 ----53809.9 -- 5/25/2021 41,934 360 3.3 0.0 0.0 0.00 0.01 0.037 570 18.4 --49.52 ----56447.6 -- 6/23/2021 42,604 380 3.6 0.0 0.0 0.01 0.03 0.069 2,500 85.4 --666.20 ----66445.3 -- If Non-Detect Use MDL "U"lbs = Pounds ppm = Parts per million NA = Not Applicable MDL = Method detection limit lbs/day = Pounds per day scfm = Standard cubic feet per minute NM = Not Measured Analytical Results = mg/m3 BTEX = Benzene, toluene, ethylbenzene, xylenes TPH = Total petroleum hydrocarbons NS = Not Sampled mg/m3 = Milligrams per cubic meter PID = Photoionization Detector BDL = Below detection limits Non-detected results are divided by 2 for plotting Note: Emission rates and total mass removed are calculated based on TPH analytical results SVE Effluent FIGURES PROJECT: TITLE:FIGURE: DATE: SCALE: APPROVED BY: REVISED BY: DRAWN BY: LOCATION MAP 6000 Fairview Road, Suite 200Charlotte, North Carolina 28210Phone: 704.522.0330 1 Michael Asmussen Chip Cavin August 2022 1:24,000 FORMER COASTAL MART NO. 4431237 WEST FRONT STREETSTATESVILLE, NORTH CAROLINA Source: Trails.com Statesville West, North Carolina NAD 83 1996 KILOMETERS1.5 0 1 MILES1.5 0 1 FEET100001000200030004000500060007000 SCALE 1004 Groundwater Flow Direction 90 90 64 Site Location 70 APPENDIX A Laboratory Analytical Reports ANALYTICAL REPORT Eurofins Pensacola 3355 McLemore Drive Pensacola, FL 32514 Tel: (850)474-1001 Laboratory Job ID: 400-214384-1 Client Project/Site: Coastal Mart 443 2022 For: AECOM Technical Services Inc. 1360 Peachtree Street NE Suite 500 Atlanta, Georgia 30309 Attn: Chip Cavin Authorized for release by: 1/31/2022 3:58:19 PM Isabel Enfinger, Project Manager I (850)471-6237 isabel.enfinger@Eurofinset.com Designee for Cheyenne Whitmire, Project Manager II (850)471-6222 Cheyenne.Whitmire@Eurofinset.com The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Laboratory Job ID: 400-214384-1 Page 2 of 24 Eurofins Pensacola1/31/2022 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: AECOM Technical Services Inc.Job ID: 400-214384-1 Project/Site: Coastal Mart 443 2022 Job ID: 400-214384-1 Laboratory: Eurofins Pensacola Narrative Job Narrative 400-214384-1 Receipt The samples were received on 1/21/2022 9:35 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 0.0º C. GC/MS VOA Method 8260D: The matrix spike duplicate (MSD) recoveries for analytical batch 400-564224 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Method 8260D: The following samples were diluted to bring the concentration of target analytes within the calibration range: MW-1 (400-214384-1), MW-6 (400-214384-3), MW-14 (400-214384-4), MW-16 (400-214384-5) and DUP (400-214384-7). Elevated reporting limits (RLs) are provided. Method 8260D: The continuing calibration verification (CCV) associated with batch 400-564540 recovered outside acceptance criteria, low biased, for Ethylene Dibromide and Naphthalene. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non-detect for the analyte(s), the data are reported. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Eurofins PensacolaPage 3 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Client Sample ID: MW-1 Lab Sample ID: 400-214384-1 Benzene RL 2.0 ug/L MDL 0.26 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA2138260D Toluene 2.0 ug/L0.82 Total/NA2228260D Ethylbenzene 2.0 ug/L1.0 Total/NA24.7 8260D Xylenes, Total 20 ug/L3.2 Total/NA2768260D Methyl tert-butyl ether 2.0 ug/L0.44 Total/NA23808260D Naphthalene 2.0 ug/L2.0 Total/NA21508260D Ethylene Dibromide 2.0 ug/L0.46 Total/NA21.5 J 8260D Client Sample ID: MW-2D Lab Sample ID: 400-214384-2 Methyl tert-butyl ether RL 1.0 ug/L MDL 0.22 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.43 8260D Client Sample ID: MW-6 Lab Sample ID: 400-214384-3 Benzene RL 100 ug/L MDL 13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10063008260D Toluene 100 ug/L41 Total/NA10099008260D Ethylbenzene 100 ug/L50 Total/NA1007008260D Xylenes, Total 1000 ug/L160 Total/NA10039008260D Methyl tert-butyl ether 100 ug/L22 Total/NA1005908260D Naphthalene 100 ug/L100 Total/NA1002308260D Client Sample ID: MW-14 Lab Sample ID: 400-214384-4 Benzene RL 5.0 ug/L MDL 0.65 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA5288260D Toluene 5.0 ug/L2.1 Total/NA5568260D Ethylbenzene 5.0 ug/L2.5 Total/NA5938260D Xylenes, Total 50 ug/L8.0 Total/NA55308260D Methyl tert-butyl ether 5.0 ug/L1.1 Total/NA53508260D Naphthalene 5.0 ug/L5.0 Total/NA511008260D Client Sample ID: MW-16 Lab Sample ID: 400-214384-5 Benzene RL 2.0 ug/L MDL 0.26 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA2J1.0 8260D Methyl tert-butyl ether 2.0 ug/L0.44 Total/NA23808260D Client Sample ID: MW-18 Lab Sample ID: 400-214384-6 Benzene RL 1.0 ug/L MDL 0.13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.48 8260D Toluene 1.0 ug/L0.41 Total/NA10.71 J 8260D Xylenes, Total 10 ug/L1.6 Total/NA11.6 J 8260D Methyl tert-butyl ether 1.0 ug/L0.22 Total/NA1168260D Client Sample ID: DUP Lab Sample ID: 400-214384-7 Benzene RL 100 ug/L MDL 13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10055008260D Toluene 100 ug/L41 Total/NA10088008260D Ethylbenzene 100 ug/L50 Total/NA1006408260D Xylenes, Total 1000 ug/L160 Total/NA10035008260D Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 4 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Client Sample ID: DUP (Continued)Lab Sample ID: 400-214384-7 Methyl tert-butyl ether RL 100 ug/L MDL 22 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1005208260D Naphthalene 100 ug/L100 Total/NA1002308260D Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 5 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: AECOM Technical Services Inc.Job ID: 400-214384-1 Project/Site: Coastal Mart 443 2022 Lab Sample ID Client Sample ID Matrix Collected Received 400-214384-1 MW-1 Water 01/19/22 14:15 01/21/22 09:35 400-214384-2 MW-2D Water 01/19/22 13:10 01/21/22 09:35 400-214384-3 MW-6 Water 01/19/22 13:20 01/21/22 09:35 400-214384-4 MW-14 Water 01/19/22 14:45 01/21/22 09:35 400-214384-5 MW-16 Water 01/19/22 14:00 01/21/22 09:35 400-214384-6 MW-18 Water 01/19/22 12:30 01/21/22 09:35 400-214384-7 DUP Water 01/19/22 00:00 01/21/22 09:35 Eurofins PensacolaPage 6 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Lab Sample ID: 400-214384-1Client Sample ID: MW-1 Matrix: WaterDate Collected: 01/19/22 14:15 Date Received: 01/21/22 09:35 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 13 2.0 0.26 ug/L 01/25/22 19:06 2 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2.0 0.82 ug/L 01/25/22 19:06 2Toluene22 2.0 1.0 ug/L 01/25/22 19:06 2Ethylbenzene4.7 20 3.2 ug/L 01/25/22 19:06 2Xylenes, Total 76 2.0 0.44 ug/L 01/25/22 19:06 2Methyl tert-butyl ether 380 2.0 2.0 ug/L 01/25/22 19:06 2Naphthalene150 2.0 0.46 ug/L 01/25/22 19:06 2Ethylene Dibromide 1.5 J 4-Bromofluorobenzene 96 72-119 01/25/22 19:06 2 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 100 01/25/22 19:06 275-126 Toluene-d8 (Surr)96 01/25/22 19:06 264-132 Eurofins Pensacola Page 7 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Lab Sample ID: 400-214384-2Client Sample ID: MW-2D Matrix: WaterDate Collected: 01/19/22 13:10 Date Received: 01/21/22 09:35 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene <0.13 1.0 0.13 ug/L 01/25/22 17:22 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1.0 0.41 ug/L 01/25/22 17:22 1Toluene<0.41 1.0 0.50 ug/L 01/25/22 17:22 1Ethylbenzene<0.50 10 1.6 ug/L 01/25/22 17:22 1Xylenes, Total <1.6 1.0 0.22 ug/L 01/25/22 17:22 1Methyl tert-butyl ether 0.43 J 1.0 1.0 ug/L 01/25/22 17:22 1Naphthalene<1.0 1.0 0.23 ug/L 01/25/22 17:22 1Ethylene Dibromide <0.23 4-Bromofluorobenzene 93 72-119 01/25/22 17:22 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 103 01/25/22 17:22 175-126 Toluene-d8 (Surr)100 01/25/22 17:22 164-132 Eurofins Pensacola Page 8 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Lab Sample ID: 400-214384-3Client Sample ID: MW-6 Matrix: WaterDate Collected: 01/19/22 13:20 Date Received: 01/21/22 09:35 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 6300 100 13 ug/L 01/25/22 21:16 100 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 100 41 ug/L 01/25/22 21:16 100Toluene9900 100 50 ug/L 01/25/22 21:16 100Ethylbenzene700 1000 160 ug/L 01/25/22 21:16 100Xylenes, Total 3900 100 22 ug/L 01/25/22 21:16 100Methyl tert-butyl ether 590 100 100 ug/L 01/25/22 21:16 100Naphthalene230 100 23 ug/L 01/25/22 21:16 100Ethylene Dibromide <23 4-Bromofluorobenzene 95 72-119 01/25/22 21:16 100 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 99 01/25/22 21:16 10075-126 Toluene-d8 (Surr)96 01/25/22 21:16 10064-132 Eurofins Pensacola Page 9 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Lab Sample ID: 400-214384-4Client Sample ID: MW-14 Matrix: WaterDate Collected: 01/19/22 14:45 Date Received: 01/21/22 09:35 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 28 5.0 0.65 ug/L 01/25/22 19:58 5 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 5.0 2.1 ug/L 01/25/22 19:58 5Toluene56 5.0 2.5 ug/L 01/25/22 19:58 5Ethylbenzene93 50 8.0 ug/L 01/25/22 19:58 5Xylenes, Total 530 5.0 1.1 ug/L 01/25/22 19:58 5Methyl tert-butyl ether 350 5.0 5.0 ug/L 01/25/22 19:58 5Naphthalene1100 5.0 1.2 ug/L 01/25/22 19:58 5Ethylene Dibromide <1.2 4-Bromofluorobenzene 93 72-119 01/25/22 19:58 5 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 102 01/25/22 19:58 575-126 Toluene-d8 (Surr)96 01/25/22 19:58 564-132 Eurofins Pensacola Page 10 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Lab Sample ID: 400-214384-5Client Sample ID: MW-16 Matrix: WaterDate Collected: 01/19/22 14:00 Date Received: 01/21/22 09:35 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 1.0 J 2.0 0.26 ug/L 01/27/22 19:55 2 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2.0 0.82 ug/L 01/27/22 19:55 2Toluene<0.82 2.0 1.0 ug/L 01/27/22 19:55 2Ethylbenzene<1.0 20 3.2 ug/L 01/27/22 19:55 2Xylenes, Total <3.2 2.0 0.44 ug/L 01/27/22 19:55 2Methyl tert-butyl ether 380 2.0 2.0 ug/L 01/27/22 19:55 2Naphthalene<2.0 2.0 0.46 ug/L 01/27/22 19:55 2Ethylene Dibromide <0.46 4-Bromofluorobenzene 101 72-119 01/27/22 19:55 2 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 100 01/27/22 19:55 275-126 Toluene-d8 (Surr)95 01/27/22 19:55 264-132 Eurofins Pensacola Page 11 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Lab Sample ID: 400-214384-6Client Sample ID: MW-18 Matrix: WaterDate Collected: 01/19/22 12:30 Date Received: 01/21/22 09:35 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 0.48 J 1.0 0.13 ug/L 01/25/22 17:48 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1.0 0.41 ug/L 01/25/22 17:48 1Toluene0.71 J 1.0 0.50 ug/L 01/25/22 17:48 1Ethylbenzene<0.50 10 1.6 ug/L 01/25/22 17:48 1Xylenes, Total 1.6 J 1.0 0.22 ug/L 01/25/22 17:48 1Methyl tert-butyl ether 16 1.0 1.0 ug/L 01/25/22 17:48 1Naphthalene<1.0 1.0 0.23 ug/L 01/25/22 17:48 1Ethylene Dibromide <0.23 4-Bromofluorobenzene 95 72-119 01/25/22 17:48 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 101 01/25/22 17:48 175-126 Toluene-d8 (Surr)97 01/25/22 17:48 164-132 Eurofins Pensacola Page 12 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Lab Sample ID: 400-214384-7Client Sample ID: DUP Matrix: WaterDate Collected: 01/19/22 00:00 Date Received: 01/21/22 09:35 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 5500 100 13 ug/L 01/25/22 20:50 100 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 100 41 ug/L 01/25/22 20:50 100Toluene8800 100 50 ug/L 01/25/22 20:50 100Ethylbenzene640 1000 160 ug/L 01/25/22 20:50 100Xylenes, Total 3500 100 22 ug/L 01/25/22 20:50 100Methyl tert-butyl ether 520 100 100 ug/L 01/25/22 20:50 100Naphthalene230 100 23 ug/L 01/25/22 20:50 100Ethylene Dibromide <23 4-Bromofluorobenzene 96 72-119 01/25/22 20:50 100 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 101 01/25/22 20:50 10075-126 Toluene-d8 (Surr)96 01/25/22 20:50 10064-132 Eurofins Pensacola Page 13 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Qualifiers GC/MS VOA Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Pensacola Page 14 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Method: 8260D - Volatile Organic Compounds by GC/MS Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (72-119)(75-126)(64-132) BFB DBFM TOL 96 100 96400-214384-1 Percent Surrogate Recovery (Acceptance Limits) MW-1 93 103 100400-214384-2 MW-2D 95 99 96400-214384-3 MW-6 93 102 96400-214384-4 MW-14 101 100 95400-214384-5 MW-16 95 101 97400-214384-6 MW-18 96 101 96400-214384-7 DUP 92 101 97LCS 400-564224/1002 Lab Control Sample 102 104 100LCS 400-564540/1002 Lab Control Sample 94 105 98MB 400-564224/5 Method Blank 102 103 95MB 400-564540/5 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene DBFM = Dibromofluoromethane TOL = Toluene-d8 (Surr) Eurofins Pensacola Page 15 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 GC/MS VOA Analysis Batch: 564224 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D400-214384-1 MW-1 Total/NA Water 8260D400-214384-2 MW-2D Total/NA Water 8260D400-214384-3 MW-6 Total/NA Water 8260D400-214384-4 MW-14 Total/NA Water 8260D400-214384-6 MW-18 Total/NA Water 8260D400-214384-7 DUP Total/NA Water 8260DMB 400-564224/5 Method Blank Total/NA Water 8260DLCS 400-564224/1002 Lab Control Sample Total/NA Analysis Batch: 564540 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D400-214384-5 MW-16 Total/NA Water 8260DMB 400-564540/5 Method Blank Total/NA Water 8260DLCS 400-564540/1002 Lab Control Sample Total/NA Eurofins Pensacola Page 16 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Method: 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 400-564224/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 564224 RL MDL Benzene <0.13 1.0 0.13 ug/L 01/25/22 11:44 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.41 0.411.0 ug/L 01/25/22 11:44 1Toluene <0.50 0.501.0 ug/L 01/25/22 11:44 1Ethylbenzene <1.6 1.610 ug/L 01/25/22 11:44 1Xylenes, Total <0.22 0.221.0 ug/L 01/25/22 11:44 1Methyl tert-butyl ether <1.0 1.01.0 ug/L 01/25/22 11:44 1Naphthalene <0.23 0.231.0 ug/L 01/25/22 11:44 1Ethylene Dibromide 4-Bromofluorobenzene 94 72-119 01/25/22 11:44 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 105 01/25/22 11:44 1Dibromofluoromethane75-126 98 01/25/22 11:44 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-564224/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 564224 Benzene 50.0 53.2 ug/L 106 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec. Limits Toluene 50.0 49.4 ug/L 99 70-130 Ethylbenzene 50.0 53.6 ug/L 107 70-130 Xylenes, Total 100 103 ug/L 103 70-130 Methyl tert-butyl ether 50.0 47.1 ug/L 94 66-130 Naphthalene 50.0 46.4 ug/L 93 47-149 Ethylene Dibromide 50.0 50.7 ug/L 101 70-130 4-Bromofluorobenzene 72 -119 Surrogate 92 LCS LCS Qualifier Limits%Recovery 101Dibromofluoromethane 75 -126 97Toluene-d8 (Surr)64 -132 Client Sample ID: Method BlankLab Sample ID: MB 400-564540/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 564540 RL MDL Benzene <0.13 1.0 0.13 ug/L 01/27/22 13:03 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.41 0.411.0 ug/L 01/27/22 13:03 1Toluene <0.50 0.501.0 ug/L 01/27/22 13:03 1Ethylbenzene <1.6 1.610 ug/L 01/27/22 13:03 1Xylenes, Total <0.22 0.221.0 ug/L 01/27/22 13:03 1Methyl tert-butyl ether <1.0 1.01.0 ug/L 01/27/22 13:03 1Naphthalene <0.23 0.231.0 ug/L 01/27/22 13:03 1Ethylene Dibromide 4-Bromofluorobenzene 102 72-119 01/27/22 13:03 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 103 01/27/22 13:03 1Dibromofluoromethane75-126 Eurofins Pensacola Page 17 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-564540/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 564540 Toluene-d8 (Surr)95 64-132 01/27/22 13:03 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-564540/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 564540 Benzene 50.0 42.1 ug/L 84 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec. Limits Toluene 50.0 40.7 ug/L 81 70-130 Ethylbenzene 50.0 42.8 ug/L 86 70-130 Xylenes, Total 100 85.8 ug/L 86 70-130 Methyl tert-butyl ether 50.0 41.8 ug/L 84 66-130 Naphthalene 50.0 38.5 ug/L 77 47-149 Ethylene Dibromide 50.0 37.2 ug/L 74 70-130 4-Bromofluorobenzene 72 -119 Surrogate 102 LCS LCS Qualifier Limits%Recovery 104Dibromofluoromethane 75 -126 100Toluene-d8 (Surr)64 -132 Eurofins Pensacola Page 18 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: AECOM Technical Services Inc.Job ID: 400-214384-1 Project/Site: Coastal Mart 443 2022 Client Sample ID: MW-1 Lab Sample ID: 400-214384-1 Matrix: WaterDate Collected: 01/19/22 14:15 Date Received: 01/21/22 09:35 Analysis 8260D CAR01/25/22 19:062 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-2D Lab Sample ID: 400-214384-2 Matrix: WaterDate Collected: 01/19/22 13:10 Date Received: 01/21/22 09:35 Analysis 8260D CAR01/25/22 17:221 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-6 Lab Sample ID: 400-214384-3 Matrix: WaterDate Collected: 01/19/22 13:20 Date Received: 01/21/22 09:35 Analysis 8260D CAR01/25/22 21:16100 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-14 Lab Sample ID: 400-214384-4 Matrix: WaterDate Collected: 01/19/22 14:45 Date Received: 01/21/22 09:35 Analysis 8260D CAR01/25/22 19:585 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-16 Lab Sample ID: 400-214384-5 Matrix: WaterDate Collected: 01/19/22 14:00 Date Received: 01/21/22 09:35 Analysis 8260D SAB01/27/22 19:552 TAL PEN564540 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-18 Lab Sample ID: 400-214384-6 Matrix: WaterDate Collected: 01/19/22 12:30 Date Received: 01/21/22 09:35 Analysis 8260D CAR01/25/22 17:481 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: DUP Lab Sample ID: 400-214384-7 Matrix: WaterDate Collected: 01/19/22 00:00 Date Received: 01/21/22 09:35 Analysis 8260D CAR01/25/22 20:50100 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Eurofins Pensacola Page 19 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: AECOM Technical Services Inc.Job ID: 400-214384-1 Project/Site: Coastal Mart 443 2022 Client Sample ID: Method Blank Lab Sample ID: MB 400-564224/5 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D CAR01/25/22 11:441 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-564540/5 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D SAB01/27/22 13:031 TAL PEN564540 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-564224/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D CAR01/25/22 10:171 TAL PEN564224 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-564540/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D SAB01/27/22 12:031 TAL PEN564540 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 20 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 400-214384-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 2022 Method Method Description LaboratoryProtocol SW8468260DVolatile Organic Compounds by GC/MS TAL PEN SW8465030CPurge and Trap TAL PEN Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 21 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: AECOM Technical Services Inc.Job ID: 400-214384-1 Project/Site: Coastal Mart 443 2022 Laboratory: Eurofins Pensacola The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 314 12-31-22 Eurofins Pensacola Page 22 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 23 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: AECOM Technical Services Inc.Job Number: 400-214384-1 Login Number: 214384 Question Answer Comment Creator: Roberts, Alexis J List Source: Eurofins Pensacola List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.0.0°C IR9 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pensacola Page 24 of 24 1/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ANALYTICAL REPORT Eurofins Pensacola 3355 McLemore Drive Pensacola, FL 32514 Tel: (850)474-1001 Laboratory Job ID: 400-217271-1 Client Project/Site: Coastal Mart 443 3/2022 For: AECOM Technical Services Inc. 1360 Peachtree Street NE Suite 500 Atlanta, Georgia 30309 Attn: Chip Cavin Authorized for release by: 3/31/2022 10:45:45 AM Cheyenne Whitmire, Project Manager II (850)471-6222 Cheyenne.Whitmire@Eurofinset.com The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Laboratory Job ID: 400-217271-1 Page 2 of 18 Eurofins Pensacola3/31/2022 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: AECOM Technical Services Inc.Job ID: 400-217271-1 Project/Site: Coastal Mart 443 3/2022 Job ID: 400-217271-1 Laboratory: Eurofins Pensacola Narrative Job Narrative 400-217271-1 Receipt The samples were received on 3/22/2022 9:43 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.6º C. GC/MS VOA Method 8260D: The following samples were diluted to bring the concentration of target analytes within the calibration range: MW-6 (400-217271-1), MW-14 (400-217271-2) and DUP (400-217271-3). Elevated reporting limits (RLs) are provided. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Eurofins PensacolaPage 3 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Client Sample ID: MW-6 Lab Sample ID: 400-217271-1 Benzene RL 100 ug/L MDL 13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10063008260D Ethylbenzene 100 ug/L50 Total/NA1006508260D Methyl tert-butyl ether 100 ug/L22 Total/NA1006108260D Naphthalene 100 ug/L100 Total/NA1003408260D Toluene 100 ug/L41 Total/NA10087008260D Xylenes, Total 1000 ug/L160 Total/NA10032008260D Client Sample ID: MW-14 Lab Sample ID: 400-217271-2 Benzene RL 5.0 ug/L MDL 0.65 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA5268260D Ethylbenzene 5.0 ug/L2.5 Total/NA5908260D Methyl tert-butyl ether 5.0 ug/L1.1 Total/NA53008260D Naphthalene 5.0 ug/L5.0 Total/NA510008260D Toluene 5.0 ug/L2.1 Total/NA5728260D Xylenes, Total 50 ug/L8.0 Total/NA55408260D Client Sample ID: DUP Lab Sample ID: 400-217271-3 Benzene RL 100 ug/L MDL 13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10061008260D Ethylbenzene 100 ug/L50 Total/NA1006508260D Methyl tert-butyl ether 100 ug/L22 Total/NA1006308260D Naphthalene 100 ug/L100 Total/NA1003208260D Toluene 100 ug/L41 Total/NA10087008260D Xylenes, Total 1000 ug/L160 Total/NA10032008260D Client Sample ID: TRIP BLANK Lab Sample ID: 400-217271-4 No Detections. Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 4 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Method Method Description LaboratoryProtocol SW8468260DVolatile Organic Compounds by GC/MS TAL PEN SW8465030CPurge and Trap TAL PEN Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 5 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: AECOM Technical Services Inc.Job ID: 400-217271-1 Project/Site: Coastal Mart 443 3/2022 Lab Sample ID Client Sample ID Matrix Collected Received 400-217271-1 MW-6 Water 03/21/22 11:30 03/22/22 09:43 400-217271-2 MW-14 Water 03/21/22 11:00 03/22/22 09:43 400-217271-3 DUP Water 03/21/22 00:01 03/22/22 09:43 400-217271-4 TRIP BLANK Water 03/21/22 00:01 03/22/22 09:43 Eurofins PensacolaPage 6 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Lab Sample ID: 400-217271-1Client Sample ID: MW-6 Matrix: WaterDate Collected: 03/21/22 11:30 Date Received: 03/22/22 09:43 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 6300 100 13 ug/L 03/29/22 23:46 100 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 100 50 ug/L 03/29/22 23:46 100Ethylbenzene650 100 23 ug/L 03/29/22 23:46 100Ethylene Dibromide <23 100 22 ug/L 03/29/22 23:46 100Methyl tert-butyl ether 610 100 100 ug/L 03/29/22 23:46 100Naphthalene340 100 41 ug/L 03/29/22 23:46 100Toluene8700 1000 160 ug/L 03/29/22 23:46 100Xylenes, Total 3200 4-Bromofluorobenzene 86 72-119 03/29/22 23:46 100 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 96 03/29/22 23:46 10075-126 Toluene-d8 (Surr)92 03/29/22 23:46 10064-132 Eurofins Pensacola Page 7 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Lab Sample ID: 400-217271-2Client Sample ID: MW-14 Matrix: WaterDate Collected: 03/21/22 11:00 Date Received: 03/22/22 09:43 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 26 5.0 0.65 ug/L 03/29/22 22:20 5 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 5.0 2.5 ug/L 03/29/22 22:20 5Ethylbenzene90 5.0 1.2 ug/L 03/29/22 22:20 5Ethylene Dibromide <1.2 5.0 1.1 ug/L 03/29/22 22:20 5Methyl tert-butyl ether 300 5.0 5.0 ug/L 03/29/22 22:20 5Naphthalene1000 5.0 2.1 ug/L 03/29/22 22:20 5Toluene72 50 8.0 ug/L 03/29/22 22:20 5Xylenes, Total 540 4-Bromofluorobenzene 89 72-119 03/29/22 22:20 5 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 96 03/29/22 22:20 575-126 Toluene-d8 (Surr)94 03/29/22 22:20 564-132 Eurofins Pensacola Page 8 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Lab Sample ID: 400-217271-3Client Sample ID: DUP Matrix: WaterDate Collected: 03/21/22 00:01 Date Received: 03/22/22 09:43 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 6100 100 13 ug/L 03/30/22 00:15 100 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 100 50 ug/L 03/30/22 00:15 100Ethylbenzene650 100 23 ug/L 03/30/22 00:15 100Ethylene Dibromide <23 100 22 ug/L 03/30/22 00:15 100Methyl tert-butyl ether 630 100 100 ug/L 03/30/22 00:15 100Naphthalene320 100 41 ug/L 03/30/22 00:15 100Toluene8700 1000 160 ug/L 03/30/22 00:15 100Xylenes, Total 3200 4-Bromofluorobenzene 86 72-119 03/30/22 00:15 100 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 94 03/30/22 00:15 10075-126 Toluene-d8 (Surr)92 03/30/22 00:15 10064-132 Eurofins Pensacola Page 9 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Lab Sample ID: 400-217271-4Client Sample ID: TRIP BLANK Matrix: WaterDate Collected: 03/21/22 00:01 Date Received: 03/22/22 09:43 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene <0.13 1.0 0.13 ug/L 03/29/22 18:29 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1.0 0.50 ug/L 03/29/22 18:29 1Ethylbenzene<0.50 1.0 0.23 ug/L 03/29/22 18:29 1Ethylene Dibromide <0.23 1.0 0.22 ug/L 03/29/22 18:29 1Methyl tert-butyl ether <0.22 1.0 1.0 ug/L 03/29/22 18:29 1Naphthalene<1.0 1.0 0.41 ug/L 03/29/22 18:29 1Toluene<0.41 10 1.6 ug/L 03/29/22 18:29 1Xylenes, Total <1.6 4-Bromofluorobenzene 87 72-119 03/29/22 18:29 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 97 03/29/22 18:29 175-126 Toluene-d8 (Surr)89 03/29/22 18:29 164-132 Eurofins Pensacola Page 10 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Pensacola Page 11 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Method: 8260D - Volatile Organic Compounds by GC/MS Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (72-119)(75-126)(64-132) BFB DBFM TOL 86 96 92400-217271-1 Percent Surrogate Recovery (Acceptance Limits) MW-6 89 96 94400-217271-2 MW-14 86 94 92400-217271-3 DUP 87 97 89400-217271-4 TRIP BLANK 94 97 99LCS 400-571793/1002 Lab Control Sample 87 95 90MB 400-571793/4 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene DBFM = Dibromofluoromethane TOL = Toluene-d8 (Surr) Eurofins Pensacola Page 12 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: AECOM Technical Services Inc.Job ID: 400-217271-1 Project/Site: Coastal Mart 443 3/2022 Client Sample ID: MW-6 Lab Sample ID: 400-217271-1 Matrix: WaterDate Collected: 03/21/22 11:30 Date Received: 03/22/22 09:43 Analysis 8260D NTH03/29/22 23:46100 TAL PEN571793 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-14 Lab Sample ID: 400-217271-2 Matrix: WaterDate Collected: 03/21/22 11:00 Date Received: 03/22/22 09:43 Analysis 8260D NTH03/29/22 22:205 TAL PEN571793 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: DUP Lab Sample ID: 400-217271-3 Matrix: WaterDate Collected: 03/21/22 00:01 Date Received: 03/22/22 09:43 Analysis 8260D NTH03/30/22 00:15100 TAL PEN571793 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: TRIP BLANK Lab Sample ID: 400-217271-4 Matrix: WaterDate Collected: 03/21/22 00:01 Date Received: 03/22/22 09:43 Analysis 8260D NTH03/29/22 18:291 TAL PEN571793 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-571793/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D NTH03/29/22 15:001 TAL PEN571793 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-571793/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D NTH03/29/22 14:011 TAL PEN571793 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 13 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 GC/MS VOA Analysis Batch: 571793 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D400-217271-1 MW-6 Total/NA Water 8260D400-217271-2 MW-14 Total/NA Water 8260D400-217271-3 DUP Total/NA Water 8260D400-217271-4 TRIP BLANK Total/NA Water 8260DMB 400-571793/4 Method Blank Total/NA Water 8260DLCS 400-571793/1002 Lab Control Sample Total/NA Eurofins Pensacola Page 14 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-217271-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 3/2022 Method: 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 400-571793/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 571793 RL MDL Benzene <0.13 1.0 0.13 ug/L 03/29/22 15:00 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.50 0.501.0 ug/L 03/29/22 15:00 1Ethylbenzene <0.23 0.231.0 ug/L 03/29/22 15:00 1Ethylene Dibromide <0.22 0.221.0 ug/L 03/29/22 15:00 1Methyl tert-butyl ether <1.0 1.01.0 ug/L 03/29/22 15:00 1Naphthalene <0.41 0.411.0 ug/L 03/29/22 15:00 1Toluene <1.6 1.610 ug/L 03/29/22 15:00 1Xylenes, Total 4-Bromofluorobenzene 87 72-119 03/29/22 15:00 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 95 03/29/22 15:00 1Dibromofluoromethane75-126 90 03/29/22 15:00 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-571793/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 571793 Benzene 50.0 48.5 ug/L 97 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec. Limits Ethylbenzene 50.0 50.3 ug/L 101 70-130 Ethylene Dibromide 50.0 49.8 ug/L 100 70-130 Methyl tert-butyl ether 50.0 37.1 ug/L 74 66-130 Naphthalene 50.0 51.4 ug/L 103 47-149 Toluene 50.0 51.0 ug/L 102 70-130 Xylenes, Total 100 97.3 ug/L 97 70-130 4-Bromofluorobenzene 72 -119 Surrogate 94 LCS LCS Qualifier Limits%Recovery 97Dibromofluoromethane 75 -126 99Toluene-d8 (Surr)64 -132 Eurofins Pensacola Page 15 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 16 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: AECOM Technical Services Inc.Job Number: 400-217271-1 Login Number: 217271 Question Answer Comment Creator: Whitley, Adrian List Source: Eurofins Pensacola List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.2.6°C IR10 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pensacola Page 17 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: AECOM Technical Services Inc.Job ID: 400-217271-1 Project/Site: Coastal Mart 443 3/2022 Laboratory: Eurofins Pensacola The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 314 12-31-22 Eurofins Pensacola Page 18 of 18 3/31/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ANALYTICAL REPORT Eurofins Pensacola 3355 McLemore Drive Pensacola, FL 32514 Tel: (850)474-1001 Laboratory Job ID: 400-223257-1 Client Project/Site: Coastal Mart 443 6/2022 For: AECOM Technical Services Inc. 1360 Peachtree Street NE Suite 500 Atlanta, Georgia 30309 Attn: Chip Cavin Authorized for release by: 7/29/2022 5:44:45 PM Cheyenne Whitmire, Project Manager II (850)471-6222 Cheyenne.Whitmire@et.eurofinsus.com The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Laboratory Job ID: 400-223257-1 Page 2 of 25 Eurofins Pensacola7/29/2022 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: AECOM Technical Services Inc.Job ID: 400-223257-1 Project/Site: Coastal Mart 443 6/2022 Job ID: 400-223257-1 Laboratory: Eurofins Pensacola Narrative Job Narrative 400-223257-1 Receipt The samples were received on 7/21/2022 9:04 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.3º C. GC/MS VOA Method 8260D: The following samples were diluted to bring the concentration of target analytes within the calibration range: MW-1 (400-223257-1), MW-6 (400-223257-3), MW-14 (400-223257-4) and DUP (400-223257-7). Elevated reporting limits (RLs) are provided. Method 8260D: Surrogate recovery for the following samples were outside control limits: (400-223445-A-2 MS) and (400-223445-A-2 MSD). Evidence of matrix interference is present; therefore, re-extraction and/or re-analysis was not performed. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Eurofins PensacolaPage 3 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Client Sample ID: MW-1 Lab Sample ID: 400-223257-1 Benzene RL 2.0 ug/L MDL 0.26 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA21008260D Ethylbenzene 2.0 ug/L1.0 Total/NA2318260D Methyl tert-butyl ether 2.0 ug/L0.44 Total/NA25108260D Toluene 2.0 ug/L0.82 Total/NA22508260D Xylenes, Total 20 ug/L3.2 Total/NA23708260D Naphthalene - DL 25 ug/L15 Total/NA510008260D Client Sample ID: MW-2D Lab Sample ID: 400-223257-2 Methyl tert-butyl ether RL 1.0 ug/L MDL 0.22 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.0 8260D Client Sample ID: MW-6 Lab Sample ID: 400-223257-3 Benzene RL 100 ug/L MDL 13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA100140008260D Ethylbenzene 100 ug/L50 Total/NA10017008260D Ethylene Dibromide 100 ug/L23 Total/NA10050J8260D Methyl tert-butyl ether 100 ug/L22 Total/NA10010008260D Naphthalene 500 ug/L300 Total/NA1006008260D Toluene 100 ug/L41 Total/NA100220008260D Xylenes, Total 1000 ug/L160 Total/NA10091008260D Client Sample ID: MW-14 Lab Sample ID: 400-223257-4 Benzene RL 5.0 ug/L MDL 0.65 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA5298260D Ethylbenzene 5.0 ug/L2.5 Total/NA51908260D Methyl tert-butyl ether 5.0 ug/L1.1 Total/NA54408260D Toluene 5.0 ug/L2.1 Total/NA51108260D Xylenes, Total 50 ug/L8.0 Total/NA511008260D Naphthalene - DL 50 ug/L30 Total/NA1021008260D Client Sample ID: MW-16 Lab Sample ID: 400-223257-5 Benzene RL 2.0 ug/L MDL 0.26 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA2J1.3 8260D Methyl tert-butyl ether 2.0 ug/L0.44 Total/NA24808260D Client Sample ID: MW-18 Lab Sample ID: 400-223257-6 Benzene RL 1.0 ug/L MDL 0.13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.1 8260D Ethylbenzene 1.0 ug/L0.50 Total/NA11.6 8260D Methyl tert-butyl ether 1.0 ug/L0.22 Total/NA1278260D Naphthalene 5.0 ug/L3.0 Total/NA1458260D Toluene 1.0 ug/L0.41 Total/NA12.4 8260D Xylenes, Total 10 ug/L1.6 Total/NA1158260D Client Sample ID: DUP Lab Sample ID: 400-223257-7 Benzene RL 100 ug/L MDL 13 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA100130008260D Ethylbenzene 100 ug/L50 Total/NA10016008260D Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 4 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Client Sample ID: DUP (Continued)Lab Sample ID: 400-223257-7 Ethylene Dibromide RL 100 ug/L MDL 23 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA100J528260D Methyl tert-butyl ether 100 ug/L22 Total/NA1009508260D Naphthalene 500 ug/L300 Total/NA1005208260D Toluene 100 ug/L41 Total/NA100210008260D Xylenes, Total 1000 ug/L160 Total/NA10084008260D Client Sample ID: TRIP BLANK Lab Sample ID: 400-223257-8 No Detections. Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 5 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Method Method Description LaboratoryProtocol SW8468260DVolatile Organic Compounds by GC/MS TAL PEN SW8465030CPurge and Trap TAL PEN Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 6 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: AECOM Technical Services Inc.Job ID: 400-223257-1 Project/Site: Coastal Mart 443 6/2022 Lab Sample ID Client Sample ID Matrix Collected Received 400-223257-1 MW-1 Water 07/20/22 11:40 07/21/22 09:04 400-223257-2 MW-2D Water 07/20/22 10:20 07/21/22 09:04 400-223257-3 MW-6 Water 07/20/22 10:55 07/21/22 09:04 400-223257-4 MW-14 Water 07/20/22 11:00 07/21/22 09:04 400-223257-5 MW-16 Water 07/20/22 11:45 07/21/22 09:04 400-223257-6 MW-18 Water 07/20/22 10:15 07/21/22 09:04 400-223257-7 DUP Water 07/20/22 12:00 07/21/22 09:04 400-223257-8 TRIP BLANK Water 07/20/22 12:00 07/21/22 09:04 Eurofins PensacolaPage 7 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-1Client Sample ID: MW-1 Matrix: WaterDate Collected: 07/20/22 11:40 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 100 2.0 0.26 ug/L 07/26/22 11:33 2 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2.0 1.0 ug/L 07/26/22 11:33 2Ethylbenzene31 2.0 0.46 ug/L 07/26/22 11:33 2Ethylene Dibromide <0.46 2.0 0.44 ug/L 07/26/22 11:33 2Methyl tert-butyl ether 510 2.0 0.82 ug/L 07/26/22 11:33 2Toluene250 20 3.2 ug/L 07/26/22 11:33 2Xylenes, Total 370 4-Bromofluorobenzene 91 72-119 07/26/22 11:33 2 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 100 07/26/22 11:33 275-126 Toluene-d8 (Surr)106 07/26/22 11:33 264-132 Method: 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL Naphthalene 1000 25 15 ug/L 07/26/22 17:40 5 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 4-Bromofluorobenzene 87 72-119 07/26/22 17:40 5 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 103 07/26/22 17:40 575-126 Toluene-d8 (Surr)101 07/26/22 17:40 564-132 Eurofins Pensacola Page 8 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-2Client Sample ID: MW-2D Matrix: WaterDate Collected: 07/20/22 10:20 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene <0.13 1.0 0.13 ug/L 07/26/22 10:22 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1.0 0.50 ug/L 07/26/22 10:22 1Ethylbenzene<0.50 1.0 0.23 ug/L 07/26/22 10:22 1Ethylene Dibromide <0.23 1.0 0.22 ug/L 07/26/22 10:22 1Methyl tert-butyl ether 1.0 5.0 3.0 ug/L 07/26/22 10:22 1Naphthalene<3.0 1.0 0.41 ug/L 07/26/22 10:22 1Toluene<0.41 10 1.6 ug/L 07/26/22 10:22 1Xylenes, Total <1.6 4-Bromofluorobenzene 85 72-119 07/26/22 10:22 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 111 07/26/22 10:22 175-126 Toluene-d8 (Surr)94 07/26/22 10:22 164-132 Eurofins Pensacola Page 9 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-3Client Sample ID: MW-6 Matrix: WaterDate Collected: 07/20/22 10:55 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 14000 100 13 ug/L 07/26/22 13:40 100 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 100 50 ug/L 07/26/22 13:40 100Ethylbenzene1700 100 23 ug/L 07/26/22 13:40 100Ethylene Dibromide 50 J 100 22 ug/L 07/26/22 13:40 100Methyl tert-butyl ether 1000 500 300 ug/L 07/27/22 13:04 100Naphthalene600 100 41 ug/L 07/26/22 13:40 100Toluene22000 1000 160 ug/L 07/26/22 13:40 100Xylenes, Total 9100 4-Bromofluorobenzene 87 72-119 07/26/22 13:40 100 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene 112 07/27/22 13:04 10072-119 Dibromofluoromethane 104 07/26/22 13:40 10075-126 Dibromofluoromethane 103 07/27/22 13:04 10075-126 Toluene-d8 (Surr)101 07/26/22 13:40 10064-132 Toluene-d8 (Surr)104 07/27/22 13:04 10064-132 Eurofins Pensacola Page 10 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-4Client Sample ID: MW-14 Matrix: WaterDate Collected: 07/20/22 11:00 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 29 5.0 0.65 ug/L 07/26/22 13:17 5 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 5.0 2.5 ug/L 07/26/22 13:17 5Ethylbenzene190 5.0 1.2 ug/L 07/26/22 13:17 5Ethylene Dibromide <1.2 5.0 1.1 ug/L 07/26/22 13:17 5Methyl tert-butyl ether 440 5.0 2.1 ug/L 07/26/22 13:17 5Toluene110 50 8.0 ug/L 07/26/22 13:17 5Xylenes, Total 1100 4-Bromofluorobenzene 86 72-119 07/26/22 13:17 5 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 108 07/26/22 13:17 575-126 Toluene-d8 (Surr)103 07/26/22 13:17 564-132 Method: 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL Naphthalene 2100 50 30 ug/L 07/26/22 18:08 10 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 4-Bromofluorobenzene 88 72-119 07/26/22 18:08 10 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 109 07/26/22 18:08 1075-126 Toluene-d8 (Surr)102 07/26/22 18:08 1064-132 Eurofins Pensacola Page 11 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-5Client Sample ID: MW-16 Matrix: WaterDate Collected: 07/20/22 11:45 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 1.3 J 2.0 0.26 ug/L 07/26/22 17:13 2 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2.0 1.0 ug/L 07/26/22 17:13 2Ethylbenzene<1.0 2.0 0.46 ug/L 07/26/22 17:13 2Ethylene Dibromide <0.46 2.0 0.44 ug/L 07/26/22 17:13 2Methyl tert-butyl ether 480 10 6.0 ug/L 07/26/22 17:13 2Naphthalene<6.0 2.0 0.82 ug/L 07/26/22 17:13 2Toluene<0.82 20 3.2 ug/L 07/26/22 17:13 2Xylenes, Total <3.2 4-Bromofluorobenzene 85 72-119 07/26/22 17:13 2 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 108 07/26/22 17:13 275-126 Toluene-d8 (Surr)99 07/26/22 17:13 264-132 Eurofins Pensacola Page 12 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-6Client Sample ID: MW-18 Matrix: WaterDate Collected: 07/20/22 10:15 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 1.1 1.0 0.13 ug/L 07/26/22 10:46 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1.0 0.50 ug/L 07/26/22 10:46 1Ethylbenzene1.6 1.0 0.23 ug/L 07/26/22 10:46 1Ethylene Dibromide <0.23 1.0 0.22 ug/L 07/26/22 10:46 1Methyl tert-butyl ether 27 5.0 3.0 ug/L 07/26/22 10:46 1Naphthalene45 1.0 0.41 ug/L 07/26/22 10:46 1Toluene2.4 10 1.6 ug/L 07/26/22 10:46 1Xylenes, Total 15 4-Bromofluorobenzene 85 72-119 07/26/22 10:46 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 106 07/26/22 10:46 175-126 Toluene-d8 (Surr)97 07/26/22 10:46 164-132 Eurofins Pensacola Page 13 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-7Client Sample ID: DUP Matrix: WaterDate Collected: 07/20/22 12:00 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene 13000 100 13 ug/L 07/26/22 14:04 100 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 100 50 ug/L 07/26/22 14:04 100Ethylbenzene1600 100 23 ug/L 07/26/22 14:04 100Ethylene Dibromide 52 J 100 22 ug/L 07/26/22 14:04 100Methyl tert-butyl ether 950 500 300 ug/L 07/27/22 13:29 100Naphthalene520 100 41 ug/L 07/26/22 14:04 100Toluene21000 1000 160 ug/L 07/26/22 14:04 100Xylenes, Total 8400 4-Bromofluorobenzene 84 72-119 07/26/22 14:04 100 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene 116 07/27/22 13:29 10072-119 Dibromofluoromethane 104 07/26/22 14:04 10075-126 Dibromofluoromethane 102 07/27/22 13:29 10075-126 Toluene-d8 (Surr)100 07/26/22 14:04 10064-132 Toluene-d8 (Surr)106 07/27/22 13:29 10064-132 Eurofins Pensacola Page 14 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Lab Sample ID: 400-223257-8Client Sample ID: TRIP BLANK Matrix: WaterDate Collected: 07/20/22 12:00 Date Received: 07/21/22 09:04 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL Benzene <0.13 1.0 0.13 ug/L 07/26/22 09:31 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1.0 0.50 ug/L 07/26/22 09:31 1Ethylbenzene<0.50 1.0 0.23 ug/L 07/26/22 09:31 1Ethylene Dibromide <0.23 1.0 0.22 ug/L 07/26/22 09:31 1Methyl tert-butyl ether <0.22 5.0 3.0 ug/L 07/26/22 09:31 1Naphthalene<3.0 1.0 0.41 ug/L 07/26/22 09:31 1Toluene<0.41 10 1.6 ug/L 07/26/22 09:31 1Xylenes, Total <1.6 4-Bromofluorobenzene 84 72-119 07/26/22 09:31 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 111 07/26/22 09:31 175-126 Toluene-d8 (Surr)97 07/26/22 09:31 164-132 Eurofins Pensacola Page 15 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Qualifiers GC/MS VOA Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Pensacola Page 16 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Method: 8260D - Volatile Organic Compounds by GC/MS Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (72-119)(75-126)(64-132) BFB DBFM TOL 91 100 106400-223257-1 Percent Surrogate Recovery (Acceptance Limits) MW-1 87 103 101400-223257-1 - DL MW-1 85 111 94400-223257-2 MW-2D 87 104 101400-223257-3 MW-6 112 103 104400-223257-3 MW-6 86 108 103400-223257-4 MW-14 88 109 102400-223257-4 - DL MW-14 85 108 99400-223257-5 MW-16 85 106 97400-223257-6 MW-18 84 104 100400-223257-7 DUP 116 102 106400-223257-7 DUP 84 111 97400-223257-8 TRIP BLANK 88 100 101LCS 400-586171/1002 Lab Control Sample 114 101 102LCS 400-586339/1002 Lab Control Sample 84 114 99MB 400-586171/4 Method Blank 112 101 104MB 400-586339/4 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene DBFM = Dibromofluoromethane TOL = Toluene-d8 (Surr) Eurofins Pensacola Page 17 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: AECOM Technical Services Inc.Job ID: 400-223257-1 Project/Site: Coastal Mart 443 6/2022 Client Sample ID: MW-1 Lab Sample ID: 400-223257-1 Matrix: WaterDate Collected: 07/20/22 11:40 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/26/22 11:332 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D DL 5 586171 07/26/22 17:40 WPD TAL PENTotal/NA 5 mL 5 mL Client Sample ID: MW-2D Lab Sample ID: 400-223257-2 Matrix: WaterDate Collected: 07/20/22 10:20 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/26/22 10:221 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-6 Lab Sample ID: 400-223257-3 Matrix: WaterDate Collected: 07/20/22 10:55 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/27/22 13:04100 TAL PEN586339 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D 100 586171 07/26/22 13:40 WPD TAL PENTotal/NA 5 mL 5 mL Client Sample ID: MW-14 Lab Sample ID: 400-223257-4 Matrix: WaterDate Collected: 07/20/22 11:00 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/26/22 13:175 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D DL 10 586171 07/26/22 18:08 WPD TAL PENTotal/NA 5 mL 5 mL Client Sample ID: MW-16 Lab Sample ID: 400-223257-5 Matrix: WaterDate Collected: 07/20/22 11:45 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/26/22 17:132 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-18 Lab Sample ID: 400-223257-6 Matrix: WaterDate Collected: 07/20/22 10:15 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/26/22 10:461 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: DUP Lab Sample ID: 400-223257-7 Matrix: WaterDate Collected: 07/20/22 12:00 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/27/22 13:29100 TAL PEN586339 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Eurofins Pensacola Page 18 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: AECOM Technical Services Inc.Job ID: 400-223257-1 Project/Site: Coastal Mart 443 6/2022 Client Sample ID: DUP Lab Sample ID: 400-223257-7 Matrix: WaterDate Collected: 07/20/22 12:00 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/26/22 14:04100 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: TRIP BLANK Lab Sample ID: 400-223257-8 Matrix: WaterDate Collected: 07/20/22 12:00 Date Received: 07/21/22 09:04 Analysis 8260D WPD07/26/22 09:311 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-586171/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D WPD07/26/22 08:441 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-586339/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D WPD07/27/22 08:031 TAL PEN586339 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-586171/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D WPD07/26/22 07:481 TAL PEN586171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-586339/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 8260D WPD07/27/22 07:061 TAL PEN586339 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 19 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 GC/MS VOA Analysis Batch: 586171 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D400-223257-1 MW-1 Total/NA Water 8260D400-223257-1 - DL MW-1 Total/NA Water 8260D400-223257-2 MW-2D Total/NA Water 8260D400-223257-3 MW-6 Total/NA Water 8260D400-223257-4 MW-14 Total/NA Water 8260D400-223257-4 - DL MW-14 Total/NA Water 8260D400-223257-5 MW-16 Total/NA Water 8260D400-223257-6 MW-18 Total/NA Water 8260D400-223257-7 DUP Total/NA Water 8260D400-223257-8 TRIP BLANK Total/NA Water 8260DMB 400-586171/4 Method Blank Total/NA Water 8260DLCS 400-586171/1002 Lab Control Sample Total/NA Analysis Batch: 586339 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D400-223257-3 MW-6 Total/NA Water 8260D400-223257-7 DUP Total/NA Water 8260DMB 400-586339/4 Method Blank Total/NA Water 8260DLCS 400-586339/1002 Lab Control Sample Total/NA Eurofins Pensacola Page 20 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Method: 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 400-586171/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 586171 RL MDL Benzene <0.13 1.0 0.13 ug/L 07/26/22 08:44 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.50 0.501.0 ug/L 07/26/22 08:44 1Ethylbenzene <0.23 0.231.0 ug/L 07/26/22 08:44 1Ethylene Dibromide <0.22 0.221.0 ug/L 07/26/22 08:44 1Methyl tert-butyl ether <3.0 3.05.0 ug/L 07/26/22 08:44 1Naphthalene <0.41 0.411.0 ug/L 07/26/22 08:44 1Toluene <1.6 1.610 ug/L 07/26/22 08:44 1Xylenes, Total 4-Bromofluorobenzene 84 72-119 07/26/22 08:44 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 114 07/26/22 08:44 1Dibromofluoromethane75-126 99 07/26/22 08:44 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-586171/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 586171 Benzene 50.0 52.2 ug/L 104 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 50.0 58.3 ug/L 117 70-130 Ethylene Dibromide 50.0 55.8 ug/L 112 70-130 Methyl tert-butyl ether 50.0 53.6 ug/L 107 66-130 Naphthalene 50.0 55.8 ug/L 112 47-149 Toluene 50.0 56.7 ug/L 113 70-130 Xylenes, Total 100 114 ug/L 114 70-130 4-Bromofluorobenzene 72 -119 Surrogate 88 LCS LCS Qualifier Limits%Recovery 100Dibromofluoromethane 75 -126 101Toluene-d8 (Surr)64 -132 Client Sample ID: Method BlankLab Sample ID: MB 400-586339/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 586339 RL MDL Naphthalene <3.0 5.0 3.0 ug/L 07/27/22 08:03 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 4-Bromofluorobenzene 112 72-119 07/27/22 08:03 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 101 07/27/22 08:03 1Dibromofluoromethane75-126 104 07/27/22 08:03 1Toluene-d8 (Surr)64-132 Eurofins Pensacola Page 21 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-223257-1Client: AECOM Technical Services Inc. Project/Site: Coastal Mart 443 6/2022 Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-586339/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 586339 Naphthalene 50.0 52.4 ug/L 105 47-149 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene 72 -119 Surrogate 114 LCS LCS Qualifier Limits%Recovery 101Dibromofluoromethane 75 -126 102Toluene-d8 (Surr)64 -132 Eurofins Pensacola Page 22 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 23 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: AECOM Technical Services Inc.Job Number: 400-223257-1 Login Number: 223257 Question Answer Comment Creator: DeKlerk, Michaela List Source: Eurofins Pensacola List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.4.3°C IR10 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pensacola Page 24 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: AECOM Technical Services Inc.Job ID: 400-223257-1 Project/Site: Coastal Mart 443 6/2022 Laboratory: Eurofins Pensacola The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 314 12-31-22 Eurofins Pensacola Page 25 of 25 7/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 APPENDIX B Cumulative Hydrocarbon Mass Removal 0 20000 40000 60000 80000 100000 120000 140000 Po u n d s Cumulative TPH removed by SVE APPENDIX C Time Trend Graphs APPENDIX -- 60675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. An assumed concentration of 28,000 µg/L is used when NAPL is present. MW-1 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 C1 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 906.00 908.00 910.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C260675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-2D PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C360675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-3 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C460675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-4 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C560675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-5 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX -- 60675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina Note: Site re-surveyed in November 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. An assumed concentration of 28,000 µg/L is used when NAPL is present. MW-6 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 C6 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C760675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-7 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C860675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-8 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C960675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-9 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C1060675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- MW-10 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 906.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX -- 60675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. An assumed concentration of 28,000 µg/L is used when NAPL is present. MW-11 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 C11 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX -- 60675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. An assumed concentration of 28,000 µg/L is used when NAPL is present. MW-12 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 C12 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX -- 60675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. An assumed concentration of 28,000 µg/L is used when NAPL is present. MW-13 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 C13 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX -- 60675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. An assumed concentration of 28,000 µg/L is used when NAPL is present. MW-14 PROJECT NO.Former Coastal Mart No. 443 DATE: 8/4/2022 C14 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/19/2001 1/14/2004 10/10/2006 7/6/2009 4/1/2012 12/27/2014 9/22/2017 6/18/2020 3/15/2023 12/9/2025 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in November 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX C1560675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- DATE: 8/4/2022 MW-15 PROJECT NO.Former Coastal Mart No. 443 0 10,000 20,000 30,000 40,000 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 906.00 908.00 910.00 7/6/2009 11/18/2010 4/1/2012 8/14/2013 12/27/2014 5/10/2016 9/22/2017 2/4/2019 6/18/2020 10/31/2021 3/15/2023 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX DATE: 8/4/2022 MW-16 PROJECT NO.Former Coastal Mart No. 443 C1660675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/1/2012 8/14/2013 12/27/2014 5/10/2016 9/22/2017 2/4/2019 6/18/2020 10/31/2021 3/15/2023 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down Note: Site re-surveyed in December 2013, for comparison purposes, all groundwater elevations are calculated using new top of casing elevation data. APPENDIX DATE: 8/4/2022 MW-17D PROJECT NO.Former Coastal Mart No. 443 C1760675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 4/1/2012 8/14/2013 12/27/2014 5/10/2016 9/22/2017 2/4/2019 6/18/2020 10/31/2021 3/15/2023 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX DATE: 8/4/2022 MW-18 PROJECT NO.Former Coastal Mart No. 443 C1860675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/1/2012 8/14/2013 12/27/2014 5/10/2016 9/22/2017 2/4/2019 6/18/2020 10/31/2021 3/15/2023 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX DATE: 8/4/2022 MW-19 PROJECT NO.Former Coastal Mart No. 443 C1960675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 904.00 4/1/2012 8/14/2013 12/27/2014 5/10/2016 9/22/2017 2/4/2019 6/18/2020 10/31/2021 3/15/2023 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX DATE: 8/4/2022 MW-20 PROJECT NO.Former Coastal Mart No. 443 C2060675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 11/26/2016 6/14/2017 12/31/2017 7/19/2018 2/4/2019 8/23/2019 3/10/2020 9/26/2020 4/14/2021 10/31/2021 5/19/2022 12/5/2022 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down APPENDIX DATE: 8/4/2022 MW-21 PROJECT NO.Former Coastal Mart No. 443 C2160675620.066 1237 West Front Street DWG NO.Statesville, Iredell County, North Carolina -- 0 10,000 20,000 30,000 40,000 880.00 882.00 884.00 886.00 888.00 890.00 892.00 894.00 896.00 898.00 900.00 902.00 11/26/2016 6/14/2017 12/31/2017 7/19/2018 2/4/2019 8/23/2019 3/10/2020 9/26/2020 4/14/2021 10/31/2021 5/19/2022 12/5/2022 Be n z e n e C o n c e n t r a t i o n ( µ g / L ) Gr o u n d w a t e r E l e v a t i o n ( f e e t ) Sampling Date Groundwater Elevation and Benzene Concentration vs Time Groundwater Elevation Benzene Concentration Start of AS/SVE remediation system AS/SVE remediation system shut down